Contains 1 of each thickness: 0.001 in, 0.0015 in, 0.002 in, 0.003 in, 0.004 in, 0.005 in, 0.006 in, 0.007 in, 0.008 in, 0.01 in, 0.012 in, 0.015 in, 0.02 in, 0.025 in, 0.031 in, 0.047 in, 0.062 in, 0.093 in and 0.125 in. Made of high quality, low carbon, cold rolled, full hard, steel shim. Arbor shims have no keyways. Saves time over re-machining. Packaged in airtight poly bag. Precision Brand® arbor shims are used for fast, accurate spacing of milling cutters, gang cutters, saws, slitting blades and grinding tools. Precision Brand® Arbor Shim Kit, Full Hard Steel/Low Carbon, 0.001 in Minimum Thickness, 1/8 in Maximum Thickness, 19 Piece