The patented automatic self-centering action of these jigs assures accurate center drilling every time, even on round objects. Large steel clamping screw tightens the tool like a vise, with rugged aluminum sides holding work securely without damage to the wood. Large 2″ to 2-7/16″ capacity on all models will handle most size requirements. The drill guide centers are hardened and guide holes are precision drilled and reamed for extreme accuracy. USA.
Economy Doweling Jig has five permanent drill hole sizes: 1/4″, 5/16″, 3/8″, 7/16″, and 1/2″.