The Kreg Pocket-Hole Jig 310 makes it easier than ever to build wood projects whether youre building your first DIY project, or you have been working with wood for years. The Pocket-Hole Jig 310 works with materials of any thickness between 13mm-38mm (1/2 -1-1/2 ). It features a hardened-steel drill guide and thickness stops for 13mm, 19mm, and 38mm (1/2 , 3/4 , and 1-1/2 ) material that give the versatility you need to build with boards and plywood. The included material thickness gauge and easy-set drill bit make setup simple, and the anti-slip base holds the jig precisely in position while you drill perfectly positioned pocket holes every time. Durable construction and a lifetime drill-guide warranty ensure that the Kreg Pocket-Hole Jig 310 will deliver the years of project-building and home-repair satisfaction and value you expect from the No.1 pocket-hole brand Kreg.