The component with the lowest price in the GEAR CHANGE DRUM/SHIFT FORK(S) schematic is the Screw.
The sub assemblies and components that make up this Gear Change Drum/shift Fork(s) include this Drum-assy-change, the most expensive part.
With a quantity of two pieces, the Screw is the most used part in the GEAR CHANGE DRUM/SHIFT FORK(S) diagram.