This is one BrainCo Revo 3 U21 dexterous hand, sold as a single unit for either the left or the right side and offered for the Unitree H2 EDU humanoid. U21 is the Revo 3 version without tactile sensors, and this edition carries RGB in its name. The H2 robot itself is a separate product.
The mechanics are the full Revo 3 design: 21 degrees of freedom, with four fingers of 4 each and a thumb of 5, on direct-drive, backdrivable joints. It grasps with over 70 N, pinches with over 20 N at the fingertip, closes at 3 Hz and takes objects from 10 to 150 mm across, with a 20 kg overall payload.
Buying one side at a time suits H2 EDU teams who want to develop on a single hand first, or who work on teleoperation, grasp planning and hand-arm control without needing touch data from the hand. If your work depends on contact data, the U21T adds a palm tactile array and the U21V adds fingertip visuo-tactile sensing to the same 21-joint design.
What RGB consists of on this edition (type, resolution and mounting), the hand's weight, and the mounting and cabling for your H2 unit are confirmed on your quotation.
Key Capabilities
-
Sold as a single hand: Each unit is one hand for the left or the right side, so you order the side you need.
-
21 direct-drive joints: Four fingers with 4 degrees of freedom each and a 5-DoF thumb run on backdrivable joints.
-
Over 70 N of grasp force: Fingertip pinch force exceeds 20 N, and the payload is 20 kg overall or 5 kg on four fingers.
-
10 to 150 mm grasp range: The hand closes at 3 Hz with 0.1° repeatability, and all five fingers reach the palm for a full Kapandji score.
-
No tactile sensors: Built-in sensing is an IMU and a temperature sensor on the mainboard, which makes this the simplest Revo 3 version.
-
RGB edition: The model name specifies RGB, and its type, resolution and mounting are confirmed on your quotation.
-
Three control buses: EtherCAT, CAN FD and RS-485 run at 500 Hz from a 12–80 V supply, drawing up to 10 A at 24 V.
Buying through Robotix Market
This unit is sourced new through established distribution channels and ships worldwide with the manufacturer warranty. Technical support is coordinated with the manufacturer's own service network. Deployment scope, configuration, and commissioning responsibilities are agreed as part of the quotation — on-site installation is not included in the product price.
