This Leichtung Universal Jig is designed for holding hard to handle workpieces while making cuts with your table saw or router. Especially good for safely cutting your smaller workpieces. It will help cut end-mortise and tenons, lap and spline joints, tongue and groove joints. Miter gauge slot on table saw or router must be 1/4" or deeper and 5/8" - 15/16" wide. The jig's guide bar is adjustable within this range to allow you to use it with different stationary power tools. Comes with original instruction sheet, or user's guide. Call or text show contact info