A tenoning jig is designed to work with your table saw to make a tenon which will be part of a mortise and tenon joint. The fully adjustable T30491 Tenoning Jig fits left and right tilting table saws with 3/8 in. x 3/4 in. miter gauge slots while handling a stock up to 3-1/4 in. thick. With the tenoning jig mounted in the miter slot of the table saw, the workpiece is clamped upright to the jig in various configurations so that the tenon cheek cuts can be made. Then the jig is removed and the workpiece is laid flat on the table saw to make the shoulder cuts. The T30491 has an adjustable guide bar for removing any loose play for precise results and 2 large grip handles for smooth control. The bevel angle is adjustable from 90° to 75°, and the backstop is adjustable from 90° to 45°. The multi-position control levers and extra-large clamping handwheel ensure accurate and repeatable results. Additional assembly required for left tilting saws. For use with 10 in. table saws. Material: Cast Iron.