Easy to use and adjustable for materials from 1/2-inch to 1-1/2-inch thick in 1/8-inch increments. Retractable edge stops for use inside a cabinet. The patent pending chip extraction holes are to funnel chips out the end of the drill guides. The magnetic clamp attachment is perfect for use with any Impakt Tools Face Clamp. Hardened steel drill guides that have a lifetime warranty. Kit includes jig, 50ea. - 1-1/4 inch coarse screws to start your first project, Best in its class stepped drill bit made from M2 High Speed Steel, 6-inch driver bit, depth collar, and an in-depth instruction and application guide.