Italian type bicycle B.B. cup set SC-BB-108, threaded 36 mm x 26 TPI LH-RH, for fitting the crank axle bearings into a bicycle's bottom bracket shell. The cups seat the bearings that let the axle and cranks turn. The set of 3 has two silver threaded cups, one with a hex-shaped outer face, plus a thin notched lockring. Finish options are BCP/ZP/CP/Golden. Catalogue code: SC-BB-108