Bore Size:6 - 30 mm Outside Diameter:15 - 72 mm Precision Rating:P0 P6 P5 P4 P2 Seals Type:Open, N, NR, ZZNR. Number of Row:Single Row certificate:ISO9001:2008 Material:ceramic, plastic,stainless steel ,chrome,carbon Tolerance:ABEC1(P0) ABEC3(P6) ABEC5(P5) ABEC7(P4) clearance codes:C0,C2, C3, C4, C5 Applications:skateboard, engines, transport vehicles, agricultural machinery Vibration:Z1V1 Z2V2 Z3V3 Z4V4 main market:East Asia, Europe, America, African Delivery:2-10days Brand:YWS or OEM cage:steel,brass,nylon Show More