Bicycle B.B. set, Thomson type, model SC-BB-103: a bottom bracket set with grooved axle, cups and ball-cages for cottered bicycle cranks. It holds the crank axle and its bearings in the frame's bottom bracket shell. Two versions are offered. Version A is a set of 9, cottered, 35mm, with 3/16" X 10 ball-cage and grooved axle, length 150mm. Version B is a set of 11, cottered, 40mm, with 1/4" x 9 ball-cage, length 150mm. Finish options are BCP, black and ZP. The set has a brass-coloured finish and includes the axle, threaded cups, lock ring, nuts, washers and black dust covers. Part numbers: SC-BB-103