Used on its own or in combination with other components of Kreg’s modular, expandable 300-series jig system, this economical kit contains the essentials for pocket-hole joinery. Molded from tough glass-reinforced nylon, the double-hole drill guide has hardened steel bushings, a non-slip base, and graduated positioning stops for quick, reliable set-up on 1/2", 3/4", and 1 1/2" material.