Kreg Pocket Hole Jig K4 Master SystemPocket hole Jig for creating strong joints easily when building wood projects Works solid wood and plywood sheet materials from 1 2 In. to 1 1 2 In. thick Removable drill guide makes it easy to use on the bench top and portably Built in guides make setup fast and simple based on thickness of material Constructed from durable glass reinforced nylon to survive years of rugged use Sturdy, adjustable toggle clamp holds materials securely while working