Pack of 10 units of hub and bottom bracket bearings CB-091 MR16287 2RS 16x28x7 - Model CB-091 - Size:16x28x7 - 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 Pack of 10 hub and bottom bracket bearings CB-212 6806 2RS 30x42x7 - Model CB-212 - Size:30x42x7 - 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