ITEM NAME:58Mm Plastic Omni Wheel for Robot Kit and Servo Motor 14135 T8M3 58Mm Plastic Omni Wheel for Robot Kit and Servo Motor 14135 T8M3 Omni Wheel compatible with omnidirectional robot wheel, it is useful since they roll freely,the omni wheel is robust,durable double row wheel that provides easy prope 360 ??degree movement with rotational and lateral maneuverability.It comes with an NXT compatible axle and a central axis for Arduino engines.If you use this omni wheel on your robot,it can go forward / backward and turn without changing its orientation. Load capacity:3 KG colour:Black + gray Material:ABS+ rubber Size:Wheel diameter:58mm Roller Diameter:13mm Package Contents: 1*58mm Plastic Omni Wheel.It is useful since they roll freely,the omni wheel is robust,durable double row wheel that provides easy prope 360 ??. 1 58mm Plastic Omni Wheel. compatible with omnidirectional robot wheel. Omni Wheel.