Pack of 10 units of hub and bottom bracket bearings CB-101 6803 2RS 17x26x5 .- Model CB-101.- Size:17x26x5.- Outer and inner CrMO ring.- Balls:CrMO (HRC 61-66).- Cage:Steel.- Sealing:2RS rubber (light contact).- Fat:Fat:MULTEMP SRL (kyodo Yushi).- Tolerance:ABEC-3