The most reasonably priced component used on the Cb550f2 Super Sport 550 Four 1977 Germany Seat - Tool is the Washer,plain, 6mm.
This Seat Assy. is the most expensive of the items that make up this Seat - Tool assembly.
With a quantity of four pieces, the Nut,hex 6mm is the most used part in the SEAT - TOOL diagram.