Micro Jig's BLADEMATCH Arbor Shim pack is a table saw accessory you do not want to be without! By inserting these shims between your saw blade and the arbor, you can quickly and easily create the same cuts from different blades every time, with no moving, measuring or re-calibrating your rip fence scale. This set includes six shims in the following widths: 0.003"; 0.004"'; 0.005"; 0.006"; 0.010"; and 0.020". Simply calibrate each of your blades just one time, and your cut line will remain the same every time, regardless of which blade you use. Get better and more accurate performance from your table saw with perfect alignment, and easily align your cuts with your riving knife and splitter system for safer cutting.