Usage Tips:[Size] Free skateboard wheels with bearings are 52mm 98A polyurethane material. The wheel size is 52mm (diameter) x 30mm (width). The bearing is 22mm x 8mm and has been installed on the wheel. [Applicable] The 52mm wheels are suitable for beginners playing shorter longboards or cruising. It can be used on any ground, slope, sidewalk, smooth concrete or asphalt. [Excellent quality] 98A hardness PU material is perfectly , stable and quiet. The slide is fast and smooth, and has a grip help sag. [Reliable good helper] The high-quality wheels use high-quality bearings to help you successfully complete the street dial. Due to its light weight, most freestyle skaters are also favored. This wheel comes with a set of designed packaging that is suitable as a gift for family and friends. Application: Standard skateboard, long skateboard, conventional skateboard, cruiser skateboard, Penny Board, other trolley or suitcase... Colour: White Material: PU + bearings Size: 52x30mm Package Contents: 4 x skateboard wheels 8 x black circle bearings 4 x sleeves Only the above package content, other products are not included. Note: Light 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.