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. Drill guide centers are hardened, guide holes are precision drilled and reamed for extreme accuracy. USA.
Self CenteringIncludes 2 each size bushing 1/4, 5/16,and 3/82-3/8 wide capacityMade from aircraft grade aluminumSteel plated for corrosion prevention