【FITS YOUR SKATES】8 packs 32mm x 58mm skates wheels for double row skating and skateboard, 1 mounting wrench for installation. 【82A HARDNESS WHEELS】Using polyurethane polymer material, non-slip, wear-resistant, good pressure resistance, four-wheel PU shock absorption, skating more comfortable. Suitable for many occasions, indoor, outdoor, asphalt roads, parks. 【STURDY & DURABLE BEARING】Using 608RS high-speed rotating bearing, sliding without noise, smooth and fast rotating speed, and more durable. 【DESIGNED TO SPEED UP】 Designed with an exclusive anti-stick compound reduce friction that gives a fast/consistent, smooth slide all the way through. 【LIGHT UP YOUR SKATE】Dazzling blue lights come on automatically when the wheels are spinning. So the faster you skating the brighter they get! Size: 32mm x 58mm Hardness: 82A Package Content: 8 x Roller skate wheel(Bearings and Magnetic core installed) 1 x Mounting wrench NOTE: If the wheels don't light up, the bearing may be loose, please press the bearing with your hand and the wheel will light up.