New releases: Pax Plus & Pax Mini | Free US shipping over $30
Banana Bros

Banana Bros. OTTO Grinder


Orders placed before 2pm ET ship the same day for in-stock products. Free US shipping over $30. Discreet packaging.

Frequently purchased with:


  • SMART Automatic Grinder
  • All-In-One Grinder
  • Electronic Rolling Machine
  • Premium Cones

This product is currently out of stock, check out our latest grinders instead.


  • Compatible with Dry Herb
  • Battery Type Internal
  • Height 11.5 in / 29.21 cm
  • Depth 7 in / 17.79 cm
  • Width 2.5 in / 6.35 cm
  • Weight 20.48 oz / 580.6 g
  • Warranty 1 Year


Introducing the world’s best automatic grinder, The Otto Grinder by Banana Bros. With SMART technology, the OTTO grinder senses the consistency of the material and automatically adjusts to perfectly grind in only few seconds. It can grind and pack 20-30 cones per charge and evenly fill premium cones. It is equipped with a spring-loaded grinder, 20 premium cones and wider lips to allow contents to fill all the way to the tip.

SMART Automatic Grinder

This spring-loaded grinder works like a human hand. As the material is shredded, it adjusts its movement according to the granule size to achieve perfect consistency. Otto Grinder's chamber features high grade, wear-resistant metal teeth for shredding dry herbs down to fine granules.

All-In-One Grinder

The Otto Grinder is your electric grinder and automatic cone roller in one. Instead of using different devices to prepare your cones, you can do it all with this compact device. It also automatically adjusts to the optimal grind for whichever material is loaded.

Electronic Rolling Machine

Otto grinds and rolls herbs all at once. It can create 20 to 30 finely rolled cones for every full charge.  An o-funnel ensures spill-free loading, while a transparent cone tube allows you to observe your cone as it fills up with dry material. With an airtight seal, the Otto grinder prevents odors from escaping the tube. A magnetic connection enables snap-on attachment for easy retrieval of your freshly rolled cones.

Premium Cones

The Otto comes with 20, 100% all-natural, premium cones. Each cone delivers a slow burn with natural flavor and aroma.

How to Use

  • Load the chamber with dry herb and place a premium cone in the tube.
  • Attach the grinder to the tube using the magnetic connectors.
  • Hold the power button down to turn the device on, then press it once to begin grinding.

2 reviews for Banana Bros. OTTO Grinder

  1. Martin Jones

    I’ve got this order today and this make grinding herbs convenient!

  2. Misty Carter

    Super excited to have this. I never thought grinding herbs would be this easy.

Add a review

Your email address will not be published. Required fields are marked *

Are you over 21?

You must be at least 21 years old to enter.