[Match your skates]Package includes 4 glow-in-the-dark rollers, flashing at night; each wheel comes with 2 x 608 bearings and 1 x roller core and 1 x mounting wrench [Reliable Material]The light-up double-row wheels are made of durable silicone with 78A & 82A hardness to provide good gliding performance; the skate wheels perform well on the interior surfaces of wood, concrete and sports tiles, providing you with a long-lasting grip [Sturdy and durable bearings]Adopt 608RS high-speed bearings, sliding without noise, and fast rotation speed, more durable. [Acceleration Design]Adopt unique anti-stick compound design to reduce friction and provide fast/consistent and sliding. [ your skateboard]Colorful dazzling eye-catching. When the wheels rotate, the light will automatically . So the faster you skate, the brighter the ball will be Color: As Shown Material: Pu Package Contents: 4 x Skating shoe glowing wheel 1 x Wrenches 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.