Add a second bit to your Kreg 300 Series Pocket-Hole Jig, or update any Kreg Jig to make working with 1/2", 3/4" and 1-1/2" materials even easier. This bit works with materials from 1/2" to 1-1/2" thick. It features engraved markings for 1/2", 3/4", 1-1/2" and matching Easy-Set Stop Collar. The material thickness gauge easily measures material thickness (1/2", 3/4" and 1-1/2"). A 1/4" hex shank fits standard quick-change chucks. Compatible with all Kreg Pocket-Hole Jigs.