The Pocket-Hole Jig 520PRO is our most versatile jig yet. It's the essential jig for project builders who need an easy-to-use joinery solution wherever you work - in the backyard, on the driveway, or even in a friend's garage. The 520PRO is loaded with features, like the 360 deg. rotating handle that helps the jig adapt easily to nearly any pocket-hole project. Integrated VersaGrip clamping technology features a pump-action handle and 1 - 1 reverse trigger for quick, easy clamping and unclamping. With its flexible design, you'll never have to worry about struggling with large boards or sheets to add pocket holes in the right places. Instead, the 520PRO works in almost any orientation, so you can easily reposition the jig, clamp it, and drill perfect pocket holes. Preparing to drill pocket holes is easy. Preset material thickness settings on the drill guide block make setup fast for 1/2 in. , 3/4 in. , and 1 1/2 in. material. A sturdy steel-reinforced spine and hardened steel drill guides ensure that the 520PRO will deliver years of quality project building performance.