A set of cranks and 42 tooth chainring made by the Italian bicycle manufacturer; Bianchi. Suitable for single speed and early models. For 1/8”th x 1/2” chain. B in the chainring and the cranks are stamped ‘Bianchi’. 170mm cranks. Marked on the inside of the chaining arm with a groove. See images. Teeth show signs of use, but I’ve tried a new chain over them and they are ok. For restoration or overhaul.
