3 Inch Industrial Miniature Mecanum Wheel 20kg for Compact Robot Systems Small in size, industrial in build. This 3 inch industrial miniature mecanum wheel carries 20 kg per wheel with a metal hub and smooth PU rollers, engineered for continuous duty in compact industrial robots and automation equipment. Key Features Industrial-grade construction for continuous operation Metal hub for rigidity and durability Smooth 45° rollers for precise omnidirectional control Compact 3