Relief Router Bit 1/2ShankThe Micro Jig MATCHFIT Relief Router Bit is specifically designed to remove 55% of waste material prior to routing dovetail grooves with the MATCHFIT Dovetail Router Bit. Starting with a relief groove improves the cut quality of dovetail grooves, and prolongs the lifespan of your MATCHFIT Dovetail Router Bit. Designed to be used with MATCHFIT Dovetail Router Bit. Features tear out-free 1/4� relief groove, 11/32" laser cut depth guide router collet safety line and 1/16� top radius, 3-degree upshear carbide. MATCHFIT Dovetail Router Bit sold separately.Relief Router Bit 1/2Shank