bearing
1.Size: 8 * 22 * 7+5.5 (Inner * Outer * Height) / Unit: mm
2. Hybrid Ceramic bearings,do not need Grease,it have special rustling sound,Super High Speed,Long Spin time.
3.Rolling elements:7 Black Ceramic Beads(Si3N4), High Temperature and Abrasion resistance,High Revs.
4.Bearing with spacer, a new upgrade experience, avoiding the trouble of daily spacer loss
5.Use For: Inline Roller Skates Shoes,Speed Inline Roller Skating,Free Line Skate (Drift Board),Skate board,Long Board,Scooter,Quad Skate