1. The wheels are ultra-light and , with solid CNC aluminum core and 6-spoke design. 2. The wheel core is wrapped in fast-rolling, powerful and high-resilient PU, making riding stable and calm. 3. The wheels are equipped with our fast rolling and high precision ABEC-9 bearings 4. The wheels are suitable for 100mm stunts and freestyle scooters. Colour:black Material:Aluminum+pu Package Contents: 2 * wheels Notice: Please check the applicable size before buying 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.