The Key, Woodruff is the lowest priced item on this Camshaft - Piston schematic.
Parts such as the Camshaft - Piston: Crankshaft Comp., Key, Woodruff, Brg.,d.conn-rod, Clip,pison,22mm are included in the Cx500t Turbo 1982 (c) Germany Camshaft - Piston parts fiche.
The most expensive part in this assembly is the Crankshaft Comp..