Soft Skateboard wheels : Skateboard wheels are 70mm(diameter) x 51mm(width) polyurethane material,which has a strong shock absorption effect, can brings a better sliding experience compatible with street skating and tricks. It is very suitable compatible with parks, streets, ramps, block road, square, runway, durable and smooth.Aluminum alloy Truck: Lightweight and Strong Design.Skate board bracket is light weight, it does not affect skateboard speed.Skateboard trucks is solid with great load capacity, light weight may not harm skating speed.This product is a good choice compatible with all users.High Precision Bearing: Compared with other skateboard bearings, ABEC-bearings have higher precision and can idling compatible with a longer time. The premium wheels with high quality bearings help you do street tricks very well.Skateboard wheel type: Matte wheelBearing : ABEC-9Colour:blackMaterial:Aluminum alloySize:skateboard wheel:70x51mmSurf Skateboard Trucks : 6 INCHGasket : 3mmPackage Contents:1 pair x skateboard brackets8 x ABEC-9 bearing4 x skateboard wheel1 x ship type gasket1 x square spacer8 x screw+nutOnly the above package content, other products are not included.Note: Light shooting 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.