Item Type: 48mm Omni Directional Wheel_x005f_x000D_Material: Nylon, PE_x005f_x000D_Gross Weight: 52g / 1. 8oz_x005f_x000D_Color: Black grey_x005f_x000D_Wheel Diameter: 48mm / 1. 9in_x005f_x000D_Wheel Width: 26mm / 1. 0in_x005f_x000D_Roller Diameter: 13mm / 0. 51in_x005f_x000D_Wheel Aperture: 12mm / 0. 47in_x005f_x000D_Load Capacity: 2kg_x005f_x000D_Applicable Models: For Mindstorm compatible hubs and other motors. 1360 Degree Rotatable: Installed the omni directional wheel in a fixed position, it can rotate 360 degrees and move flexibly. 2Applications: Omni wheels compatible for Mindstorm are commonly used in industrial markets, ground and inversion applications, such as manual and electric transmission systems, feed rails, workstation turntables, robot wheels, etc. 3Durable: The 48mm double row omni wheels are made of nylon and PE materials, which are durable and wear resistant. It is applicable to different environments and has low maintenance cost. 4With Coupling: Equipped with plastic round and cross shaft couplings. The omnidirectional wheel is more sturdy, the fixing direction is clear, the installation is simple and stable, and the load stability is excellent. 5Stable Performance: Durable construction and unlimited mobility make this Omni wheel ideal for harsh environments and industrial applications.