58 mm (L E G O) NXT compatible omni wheel 14135 58 mm (l e g o) compatible omnidirectional wheel (omni wheels) Mindstorm's NXT compatible with all-wheel hub of a NXT Arduino compatible hub motor shaft. It can be rotated 360 degrees, motion light, solid structure, suitable for different environments, low maintenance costs, designed to manual and electric conveyor belt system services, such as rail transport, workstations turntables, robot wheels and so on. Key Features: Colour: Black Wheel diameter: 58 mm Roll diameter: 13 mm Body material: Nylon Roller material: TPR Load capacity: 3 kg Weight: 60 g