Century Drill And Tool Hole Saw Arbor Attached 2-1/8

Professional bi-metal saws with 8% cobalt high speed steel teeth, electron welded to shatterproof, shock absorbing alloy bodies.
Variable pitch tooth pattern cuts clean through stainless steel, brass, aluminum, pipe steel, nail embedded wood, hardwood, plywood, sheet metal, fiberglass and plastic.
Suggested speed RPMs are for cutting mild steel. Decrease RPMs by 30% for cast iron. Increase RPMs by 30% for brass and aluminum.
Hole saws are shipped without pilot drills, order pilot drill separately.
Can be used in portable electric drill machines, lathes and milling machines.
Extra deep 1-3/4 cutting depth, 3/8 hex shank.