This set of seven die shims for 7/8 by fourteen dies permits you to adjust your sizing die by a desired amount without loosening the die lock ring. The original setting is maintained by going back to previous shim. Dies should be set up with a shim in place (.006 or .007 is suggested for original set-up). Set includes shims .003, .004, .005, .006, .007, .008, and .010. Shims are notch marked for identification.
Sinclair, Issue:3B, Page:014
Sinclair, Issue:3B, Page:076