The Rear Brake Drum is made up of components including this Drum,rr.brake which is the most expensive.
Some items from this specific schematic: Drum,rr.brake, Seal,rr.hub, Drum,rr.brake, R/brg Tap N/com.
The Pin Cotter 4.0mm is the lowest priced item on this Rear Brake Drum schematic.
