Need to add a little space into your machines? Use the Reid Supply Build-A-Shim system. It’s easy as 1-2-3. Step 1. Select the prefix (shim material and style). Choose between 1010 full hard steel or 300 series stainless steel with holes or slots. Step 2. Select the shim component. Choose from any of the rest pads, jig feet, flat feet or locating pins. Step 3. Select the suffix (shim thickness). Choose from the range of nominal thicknesses provided below for either 1010 full hard steel or 300 series stainless steel.