Self Centering Drill Bit Guide Jig

This simple, yet precise Drill Guide locates exact drilling centers and guides drill bits perfectly perpendicular to the workpiece on flat, round, spherical and corner edges. The Drill Guide also acts as a quick and accurate dowel drilling guide for edge joining. Includes 3/16", 1/4", 5/16", 3/8", 7/16" and 1/2" drill bushings, locating pin and guide.