Amazon.com: Premium 4WD Smart Mecanum Wheel Car Chassis for Arduino / Raspberry pi, ROS Metal Robot Platform with 80mm Mecanum Omni Wheel & DC Motor with Encoder, DIY Smart RC Robot Car
Robot Bit - Mecanum Wheel Car Kit - Seeed Studio | Mouser
A set of 5 inch Heavy Duty Industrial Mecanum Wheel with PU Roller and Load Capacity 200KG – NM127A – Oz Robotics