WEIWEIBEIER Full Ceramic 608 Inline Speed Skating Bearing White Black 7-Bead 608rs for Professional Indoor Speed Track Race (Size : 16pcs Black Ceramic)

This 608 bearing suit for professional indoor track racing;The ceramic bearing should avoid collision / knocking / jumping;The white ceramic is made of ZrO2 material;The black ceramic is made of Si3N4 material;The ceramic bearing don't need to lubricate;The 608 bearing is with 8mm*22mm*7mm size;The bearing can be used on inline skates / roller skates / skateboard / driftboard etc...Package Included:16 pieces bearings;1 piece container.