Ready to use right out of the box to produce 1/4" mortise and tenon joints for cabinets, furniture and frames. Included are bushings for also producing 3/8" and 1/2" joints with other size optional spiral up cut bits (not included). Using A plunge router with the jig, woodworkers of all skill levels can cut fully aligned mortises and tenons ranging from 1/4" to 1/2" wide and from 1” to 3" long. The jig can be mounted directly on a workbench or onto a board that can be clamped in a vise or to a bench. ALL-IN-ONE SOLUTION- Provides a quick and easy way to cut both a matching mortise and tenon with a single jig DURABLE- Jig body made of solid aircraft grade aluminum ACCURATE- Integrated clamps and swing arms align and secure wood for accurate joints VERSATILE- Can easily handle wood stock ranging from 1/2-inch to 1 1/2-inch thicknesses and can cut multiple mortises in a single long piece INCLUDES- 1/4-inch high speed upcut spiral bit, bushing guides for 1/4-inch 3/8-inch and 1/2-inch tenons, two-part base plate/bushing adapter, centering tool and adjustment wrench Learn more: https://generaltools.com/e-z-pro-aluminum-mortise-tenon-jig-kit