FSA Micro Angular Cartridge Bearing (36 x 36) (Orbit X/Upper Pig DH Pro) (1-1/8"... - 160-0016000000
FSA Micro Angular Cartridge Bearing (36 x 36) (Orbit X/Upper Pig DH Pro) (1-1/8"... - 160-0016000000, This is a single FSA Micro ACB 36 x 36 degree 1-1/8" MR043 black seal headset bearing cartridge.