Pack of 4 pieces skateboard wheel longboard rollers made of wear-resistant & solid PU material providing durable use experience Effective reduce the vibration feet and noise of the skateboard. 78A hardness which is soft with plenty of grip, but hard enough to slide on rough ground Fine workmanship, beautiful looking and plenty of colors make your board attracting Suitable for kids Skateboard, Longboard, Electric Skateboard, Mini Cruiser, etc. Colour:Yellow Material: PU Size:51 x 70mm Package Contents: 4 x Wheels 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.