Good material: Polyurethane (PU), high quality wheel, reduce excessive abrasion. Durable, stable and quiet to slide quickly and smoothly; 608 RS ABEC-9 chrome steel bearing allows high speed to be achieved. Set parameters: wheel - diameter 52 mm, width 32 mm; 608 RS and ABEC-9 bearing 22mm outer diameter, 8mm inner diameter, 7mm width. 95A Skate Wheel: 95A hardness and 80% rebound, hard wheels for playing tricks; good to use on the street, skate parks, skatepark bowl, rink, on ledges, gaps, hand rails and pads, etc. Perfect for most skaters also beginners. Ideal replacement wheels: suitable for many skateboards such as Skateboard Pennyboard Snakeboard Cruiser Board etc. Could also be used for quad roller skates. Good choice as a gift on birthday, Christmas and New Year. Package includes: 4 x 5232mm wheels + 2 x 3mm joints + 8 pairs of 29mm deck nails + a T-tool Picture is for reference only, please refer to the actual product information! ! ! (excluding roller skate) Product Name: Skateboard Wheels Material: PU Colour: white Size: approx. 52x32mm (as shown in the picture) Weight: approx. 470g Shipping quantity: Pack of 16