Raleigh type bicycle B.B. cup set, model SC-BB-107, with a 34.8 mm x 26 TPI BSCY LH-RH thread for the bottom bracket shell of a bicycle frame. Bottom bracket cups hold the bearings that carry the crank axle, so the cranks turn smoothly. It is sold as a set of 3: a silver threaded cup, a black cup and a thin notched lockring. Finish options are BCP/ZP. Catalogue code: SC-BB-107