Hardness: 82A for long-lasting grip, whether on a skate, sidewalk or on the street. Performance: Smooth, comfortable and durable, allowing you to find more pleasure. Usage: Suitable for the double row skating and skateboarding, roller skates. Suitable for many occasions, indoors, outdoors, asphalt, parks. Material: made of PU, durable, the light is bright and does not fade. Tips: the bearing should be pressed tightly to make the product emit light, otherwise it will not emit light. The picture is for reference only, please refer to the actual product information! ! ! (excluding roller skate) Product Name: Skateboard Wheels Material: PU Hardness: 82A Applicable: double row skateboard. Color: 6 blue and white lights Core: LED lights and other components Size: approx. 60x45mm Weight: approx. 470g Quantity delivered: Pack of 5