White Ceramic Beads High temperature resistance, corrosion resistance and wear resistance High speed nylon cage, and suitable for highly corrosive environments Bearing protects on both sides by keeping lubricant in and contaminants out. Small size, lightweight, easy to carry and install. Notice: Please do not wear the bearings for jumping or other high impact actions. Lubricants are not required. Bearing Type: Hybrid Ceramic Bearings Shield: Double-sided dust cover Size (inner x outer x height): 8x22x7mm 608 Bearing Skateboard Dedicated Material: Mixed Material Color: Black + White Package Contents: 24 x Skateboard Wheel Bearings /> Only the above package content, other products are not included. Note: Light shooting 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 +/- 1-3 cm.