The Studica Robotics 5mm Hex Shaft Hub allows users that have existing Omni Wheels (Part# 76260) or Mecanum Wheels (Part# 76243) to use REV Robotics 5mm Hex Shafts and Hex Motors.

The Studica Robotics 6mm D-Shaft Hub (4 pack) is used to connect any Studica wheel and/or motor with a 6mm shaft.

The Studica Robotics Light Weight 6mm D-Shaft Hub (2 pack) are used with 6mm D shafts. They have a 5mm set screw for tight clamping and seven M3 tapped mounting holes.