West 916 lock core follower

This is a 47mm long follower for a West 916 lock core (45mm cylinder + 2mm deep cross slot). 

The follower 11.8mm in diameter to fit snugly but still leave room for shims.

One end has a 1.9mm wide raised cross to fit the 2mm cross slot on the rear of the core, and the other end has a notch to remove or replace a single pin/spring stack at a time.