banana bros. OTTO Grinder

14 Reviews
  • All-In-One-Tool
  • Grinds Herb and Fills Cones Rapidly
  • Smart Milling Machine
  • Makes 20-30 Cones Per Charge
  • Patented Artificial Intelligence
  • Automatically Adjusts Grinding
  • Fresh Seal Cone Tube
  • Odor-Proof
  • Premium Cones
  • Spill-Proof O-Funnel
  • Sleek, Functional Design
  • Magnetic Connections
  • Simple Controls
  • Rapid USB Charging

Availability: In Stock

Special Price $128.00


Special Price $7.49



The OTTO™ by banana bros.™ is the first-ever all-in-one smart milling machine, capable of finely grinding your dry herb and filling the perfect cone in seconds. Boasting patented artificial intelligence, the OTTO senses the consistency of its contents and automatically adjusts its movement to deliver the perfect grind. This hybrid comes with 20 all-natural cones featuring wider lips for efficient filling and a slow burn. A fresh seal cone tube contains odors and delivers even and spill-free filling. OTTO allows you to mill and fill your dry herb with the touch of a button.


Seamlessly integrating grinding and filling for a more streamlined experience, the OTTO creates perfectly packed cones filled with finely ground bud in just seconds. Rather than rely on a number of devices to prepare your cones, you can do it all in one fell swoop with this compact, travel-friendly device. You can charge up from USB from almost anywhere, and easily prepare cones from wherever life leads you. Featuring a sleek and functional design with a simple single button control, the OTTO by banana bros. makes packing a cone easy so you can take it easy.


Equipped with a spring-loaded mill that mimics the gestures of the human hand, the OTTO delivers the perfect grind every time. As herb is shredded, this smart milling machine adjusts its grind according to granule size. Material is quickly ground down to the perfect consistency and automatically loaded into a premium cone. Engineered for efficiency, this heavy-duty mill features high-grade metal teeth arranged for maximum grinding.


Designed to expedite and optimize your filling, the banana bros. OTTO can create 20 to 30 finely packed cones per full charge. Stock up on cones or fill them on-demand with ease. An o-funnel ensures each cone is run-free and filled for a slow, even burn. A fresh seal cone tube is designed for precision filling with a transparent look for watching cones fill to perfection. The OTTO automatically grinds and fills herb all at once and at the push of a button.


The OTTO comes with 20 premium cones made of 100% all-natural raw fiber that is free of GMOs, chemicals and animal products. Each cone delivers a slow, even burn with natural flavor, aroma, and effects. A wide lip ensures every cone is filled to the brim, while a sturdy design stops cones from bending or running to deliver the best airflow and burn. Expect full-bodied, flavorful and potent rips every time.


Engineered for function and efficiency, the OTTO features an easy-to-use design for fast, efficient performance. Simply open the chamber using the side button, fill it with dry herb, and snap it shut. Now load the fresh seal cone tube with an empty cone. The OTTO attaches to the cone tube via convenient magnetic connectors. Hold the power button until it lights up, then press it once to begin grinding. Your herb will be finely ground and loaded into the cone in swift succession.

  • 1 x banana bros. OTTO Grinder
  • 1 x Fresh Seal Cone Tube
  • 1 x Extra Seal
  • 1 x Cleaning Brush
  • 1 x USB Charging Cable
  • 1 x Cone Retention Straw
  • 20 x banana bros. OTTO Cones

banana bros. OTTO Grinder Additional Information

Dimensions: 2.5 x 7 x 11.5 in.
Weight: 1.28 lbs.

banana bros. OTTO Grinder Ratings & Reviews

Ratings & Reviews
14 reviews
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Most Helpful Customer Reviews
  • 1 of 1 people found the following review helpful


    I had a stroke can't roll or use a grinder. This does a great job for me!

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  • 1 of 1 people found the following review helpful


    When I got my grinder, it was not assembled properly. The top lid was not connected for some reason. I contacted Vapor Nation about it and they made it their business to contact me. Stupendous customer service. I don't know how Banana Bros got wind of the issue but they contacted me as well. This was a birthday gift and they wanted me to be able to give my gift on time so do U know what they did? They hand delivered it to me!!!! What company goes above and beyond like this these days? None that I know of! Thank U Vapor Nation and Banana Bros for a wonderful product and universe class customer service!!!

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  • 1 of 1 people found the following review helpful

    I don't know if I should give this thing 1 or 5 stars!!!

    I have to start off by saying this thing is amazing. After the first use I was looking at it like wtf, this didnt do anything just to realize it had actually filled my cone so fast and effortlessly I just assumed it did nothing. I immediately "rolled" another and actually watched it work this time and I have to say it's crazy cool. It actually works, I tried one of the included cones and then 2 of my Amazon jware cones and both worked fine.

    With all that said it has two problems. The small problem is it doesnt pack the cones all that well. The instructions recommend tapping it on the table as you fill and shaking after, and frankly if you do both of those things the cones come out just fine, but the push and go experience of the grind instantly spoiled me.

    The second issue is it makes rolling way too easy. There is no reason to smoke any other way now. This thing is going to be a huge burden on my wallet because I'm about to go through my shit so much faster.

    In all seriousness this thing is great. If you like joints and are even remotely lazy this thing is a must own. Came boxed well with good instructions, banana bros has done well here.

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  • 1 of 1 people found the following review helpful


    neat automatic grinder n roller of fine cones, "it really works."
    Only problem is you have to cut the product your using small to be able to grind, if its to big it clogs up n stops...

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  • 1 of 1 people found the following review helpful

    Works like a charm

    Works well, does a pretty neat job and a great conversation piece.

    By on

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Questions & Answers
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Q: What kind of warranty does the unit come with?

Asked By David on April 05, 2019

A: David, The banana bros. OTTO Grinder comes with a one year warranty, that covers manufacturer defects: -VaporNation

Q: would i be able to use blunts instead of the regular cones?

Asked By nippa on September 06, 2018

A: Nippa, You could fill a blunt with the banana bros. OTTO Grinder if you forfeited use of the cone tube and held it in place, the cone tube is only designed for king size cones or Cal-king size cones. -VaporNation

Q: Do you guys have a wholesale price? Will you be willing to come down on orders of 50 or more?

Asked By Justin V Collins on August 26, 2018

A: Justin, To find out more about wholesale pricing for the banana bros. OTTO Grinder look here: -VaporNation

Q: Do you have plans for a version that rolls 1 gram joints?

Asked By Kunkin on August 03, 2018

A: Kunkin, Currently we are unaware of any sequels to the banana bros. OTTO Grinder that are coming out. -VaporNation

Q: I do not care for the larger papers. Do you have adapters for the 1x 1/4 size.

Asked By Billy on July 27, 2018

A: Billy, There currently are no adapters for the banana bros. OTTO Grinder, however if you fill the grinder to around half capacity it should be able to properly fill your 1 x1/4 cone. -VaporNation

Q: For how long does it work after a full charge?

Asked By Marius Camon on June 29, 2018

A: Marius, The banana bros. OTTO Grinder can give you 20-30 cones per charge, time wise that depends on how often you'll be loading dry herb in in between cones. Happy vaping! -VaporNation

Q: Do you guys ship the Otto Grinder to Mexico?

Asked By Immer on June 29, 2018

A: Immer, Yes, we can ship the banana bros. OTTO Grinder to Mexico. Happy vaping! -VaporNation

Q: Hi, send to Chile, if so, how long it takes

Asked By Jorge Fuentes on June 28, 2018

A: Jorge, It should take around 1-2 weeks to get the banana bros. OTTO Grinder to Chile. Happy vaping! -VaporNation

Q: I like to call left the keef. Does this device allow that?

Asked By Aly on June 16, 2018

A: Aly, The banana bros. OTTO grinder does not collect crystals. If you'd like a grinder that does check out our 4-piece grinder section: Happy Vaping! -VaporNation

Q: Hola, soy de Argentina y quisiera saber si hacen envíos? Excelente producto...!!!

Asked By Andrea on June 14, 2018

A: Andrea, ¡Sí! ¡Enviamos los molinos de banana OTTO Grinder a Argentina! -VaporNation

Q: How much dry herb is needed to fill a cone using the otto grinder?

Asked By J. SMITH on June 14, 2018

A: J SMITH, If you pack the banana bros. OTTO Grinder fully it should hold around .5 grams. Happy vaping! -VaporNation

Q: Does this work for RAW King Size cones?

Asked By Courtney Logan on June 06, 2018

A: Courtney, Yes, the banana bros. OTTO grinder can fit RAW King Size Cones. If you'd like to reup on banana bros. cones you can here: Happy vaping! -VaporNation

Q: How to tell when it is done charging?

Asked By Josh on May 31, 2018

A: Josh, The light on the banana bros. OTTO grinder will turn green when done charging. Happy vaping! -VaporNation

Q: Cuántos días tardaría en llegar a Fort Lauderdale? Cuantos conos vienen en cada paquete?

Asked By alberto on May 26, 2018

A: Alberto, Dependerá de la opción de envío que elija, tenemos 1 o 2 días de envío disponibles. Hay 20 conos que vienen con OTTO. -VaporNation

Q: How long does the unit take to fully charge when the battery is dead?

Asked By Brian on May 22, 2018

A: Brian, The banana bros. OTTO grinder takes around 45 minutes to fully charge from a dead battery. Happy vaping! VaporNation

Q: Can you use raw cones with it

Asked By Gary l Larrabee on May 21, 2018

A: Gary, If the Raw cones are King or Cal King size they should work for the banana bros. OTTO grinder. Happy vaping! -VaporNation

Q: The top and bottom pieces came unhinged and I'm not sure how to put it together without breaking it. I need help please!

Asked By Michael Ross on May 21, 2018

A: Michael, The two grinder pieces should click in easily to their slots, and from there the banana bros. OTTO grinder should just snap closed. Happy vaping! -VaporNation

Q: Can i get a name engraved on it

Asked By Tanesia on May 20, 2018

A: Tanesia, Unfortunately right now engraving is not an option for the banana bros. OTTO Grinder. Happy vaping! -VaporNation

Q: Qual valor para enviar para Curitiba Brasil

Asked By Fagner on May 18, 2018

A: Fagner, Deve demorar cerca de 2 semanas para os banana bros. Moedor OTTO para chegar ao Brasil. Vaping feliz! -VaporNation

Q: Does it dispense JUST enough to fill up a cone everytime you press the button, or does it make sure it dispenses every bit of herb you put in it, regardless of if you put in more than enough herb for multiple cones?

Asked By Randy Marks on May 15, 2018

A: Randy, The banana bros. OTTO will dispense however much dry herb you put into the grinding chamber. If you think you have loaded too much and the cone will overflow, you can simply tilt the OTTO back as you detach it from the Cone Tube and your herb will remain inside the grinder. Happy vaping! -VaporNation

Q: How long does it usually take to ship out in the US ?

Asked By Lobo on May 14, 2018

A: Lobo, It depends on your location. Once the banana bros. OTTO Grinder is in your cart it will give you a window of delivery. Happy vaping! -VaporNation

Q: Do you ship to Australia? And if so, do you have express shipping?

Asked By Patrizio on May 14, 2018

A: Patrizio, We do ship to Australia, the only services that can be sent via FedEx to Australia fall under the “FedEx Express” banner, so in that sense, yes, we do. Happy vaping! -VaporNation

Q: i like to put some tobacco in my cones, can i put tobacco in the grinder as well?

Asked By Johana Zapata on May 13, 2018

A: Johana, Yes, you're able to put dried tobacco in the banana bros. OTTO grinder as long as it is of similar consistency to the dry herb you're also adding. Happy vaping! -VaporNation

Q: Can someone with one hand operate this with ease?

Asked By Herman on May 13, 2018

A: Herman, Yes! The banana bros. OTTO is very simple, and operated by just closing the grinder, and pressing one button. Happy vaping! -VaporNation

Q: Do you do wholesale pricing? I would like to retail these in my smoke shop.

Asked By Lori on May 12, 2018

A: Lori, We absolutely do! Click here to get the banana bros. OTTO in your shop: Happy vaping! -VaporNation

Q: How is cleaning the unit?

Asked By Mike on May 12, 2018

A: Mike, Its very easy to clean the banana bros. OTTO grinder. The inner grinder pieces detach, and can be soaked or scrubbed easily, dried, then replaced. Happy vaping! -VaporNation

Q: Is this the same product you have for sale on Amazon? Amazon product appears to have more parts.; measuring cup, etc. Thanks.

Asked By Gary on May 12, 2018

A: Gary, Yes, it is the banana bros. OTTO grinder on amazon is the same as ours, ours ships with the included measuring cup, cone tube, charging cord, multi-tool, and cones. Happy vaping! -VaporNation

Q: Hey guys! Can i buy it and its legal to send it to switzerland? Or will I have problems with that?

Asked By Maja on May 12, 2018

A: Maja, We can ship the banana bros. OTTO Grinder internationally. However we are not completely versed in Swiss law regarding herb grinders. Happy vaping! -VaporNation

Q: Could it pack a rillo as well or just joints?

Asked By Emily on May 12, 2018

A: Emily, If the tobacco used is off similar consistency to your dry herb, the banana bros. OTTO grinder should also be able to fill your cone with tobacco. Happy vaping! -VaporNation

Q: Can this grinder only be used to fill cones or can it be used effectively for any method of smoking h

Asked By Pasha on May 11, 2018

A: Pasha, The banana bros. OTTO can grind up dry herb to be put in any smoking device with the included "O Cone" for easy distribution. Happy vaping! -VaporNation

Q: is the grinder compatible with any other cone size beside the standard 1 1/4 (83mm)? would like to know before purchasing.

Asked By Richard on May 11, 2018

A: Richard, The size of cones best used in the banana bros. OTTO grinder is the "King" and the "Cal King" size cones. Happy vaping! -VaporNation

Q: What would happen if you put way more bud in the OTTO than could fit in the cone? Will it keep some of the bud in the grinder, or will it shoot it all out?

Asked By Joseph College on May 10, 2018

A: Joseph, If the OTTO grinder is packed too full it may have some spillage as you take the OTTO off of its base, but tilting the unit back as you remove it, if you think there may be too much herb inside, will prevent any spillage. Happy vaping! -VaporNation

Q: do you post to the Uk?

Asked By Penny Robson on May 10, 2018

A: Penny, Yes! We can ship the OTTO grinder to the UK. Happy vaping! -VaporNation

Q: Where can I buy additional cones?

Asked By Andrzej on May 10, 2018

A: Andrzej, The banana bros. OTTO grinder is compatible with any standard or "king" size cone. Snag some more cones right here: Happy vaping! -VaporNation

Q: What kind of ones work with this device?

Asked By Matt on May 10, 2018

A: Matt, Assuming you meant "cones", the OTTO grinder is compatible with all "king size" cones, and "cal king" size cones. Happy vaping! -VaporNation

Q: Does it come with rolling paper. And which Papers do you need to use? Very interested in purchasing. Thx in advance.

Asked By Rocco on May 10, 2018

A: Rocco, The banana bros. OTTO grinder comes with 20 premium unbleached cones. Once those run out, any king sized or "cal king" sized cones will work. Happy vaping! -VaporNation

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