Kreg Jig R3 9-Depth Settings. It is a versatile tool that can be used to join materials from 1/2" to 11/2" thick in 1/8" increments. The positioning sliders allow you to easily adjust within 9 depth settings, and the dual wood chip holes keep the drill bit clear of excess wood chips. The 2 hardened steel drill bit guides feature a lifetime warranty, and thedepth collar gauge is molded into the case for handy reference. The jig easily attaches to any Kreg face clamp, bar clamp, or C-clamp. It is great for building bookcases, shelves, storage projects, custom built-ins, and countless other home improvement projects. It can also be used portably to make lasting repairs around your home.