The original manufacturer design pin kit contains 21 sizes including top, master,
bottom pins, cap pins and springs; .115 diameter springs; 100 pieces per size. This kit is made by Specialty Products, one of the biggest manufacturers of pins in the U.S.A.
Interchangeable Core A-2 system
For use with Arrow, Best, KSP and Falcon
.108 diameter pins
28 sizes; 2 sizes of .108 dia. springs
Best caps
100 pieces per size
