Made of CNC machine crafts Soft rubber material and grip 1.55inch Beadlock wheels for 1/10 RC Crawler Car Outer Diameter: 85mm Inner Diameter: 36mm Width: 28mm Wheel Hex: 12mm Weight: 75g/pcs Tool Supplies:Assembly Category RC Parts & Accs:Servo Accessories Use:Vehicles & Remote Control Toys Technical parameters:Value 2 Remote Control Peripherals/Devices:Receivers For Vehicle Type: Four-wheel Drive :Assemblage Wheelbase:Screws color:Black Material:metal+rubber Package Contents: 4 x RC Car 1.55 inch Wheel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.