CTGPR/CTFPR 20/25/32 SHIM PIN

CTGPR CTFPR 202532 Shim Pin  

Shimming is the process of using a very thin strip of metal, known as a shim, to separate a cylinder's pins at the shearline.   

The shim moves along cylinder's plug, intersecting each pin stack, and prevents the springs and top pins, and sometimes master pins in master keyed cylinders, from entering the plug.