Adjustments to router tables, shapers and table saws are simple and precise with Kreg's Precision Router Table Setup Bar Set (PRS3400). The unique design straddles the router bit or saw blade to allow for more precise height adjustment.  The step on the top edge of each setup bar acts as a gauge to test the depth of your completed cuts, while the step on the end of the bars is used to test the fence depth of a tablesaw blade or router bit. Made of soft aluminum to prevent damage to your router bit and saw blade, it includes a handy carrying case and a variety of bar sizes.