Feature:1. Each wheel consists of 8 TPR rollers. The load capacity is up to 3kg or 105.8oz , it is powered independently and has better stability.2. Using highquality TPR, the friction force is large, and the tires are stable and no beating noise during the operation.3. Specific walking patterns are straight, inclined, lateral, stravel, and rotation at any angle with a 0 radius.4. Mecanum wheel can move in any direction without changing the direction of the roller skating.5. The structural parts are made of steel materials, with long service life and no deformation.Specification:Item Type: RC AccessoriesBody Material: SteelRoller Material: TPRWheel Diameter: Approx. 48mm or 1.9inWheel Width: Approx. 25.5mm or 0.9inRoll Length: Approx. 25.5mm or 0.9inLoad Capacity: Approx. 3kg or 105.8ozWeight: Approx. 253g or 8.9ozNumber of Rollers Per Wheel: 8pcsNumber of Plates Per Wheel: 2pcsSuitable for: Robot Car 14209.Package List:4 x 48mm Mecanum WheelsNote:1. Manual measurement, allow 1and 8209 3mm or 0.04and 8209 0.12in error, thank you!2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.