1/2" internal diameter spacer shims for brake installation.
These are S.S shim packs with a variety of shims of different thicknesses to assist the installer in getting proper alignment. The ID of shims .5~.510 and OD is .74~.75 inches. There are 9 shims in the pack, .010 (2) .005 (2) .003 (3).002 (2).