Century Drill And Tool Hole Saw Arbor Attached 2-1/2″ Size:2-1/2″ The included Titanium Enhanced Bi-Metal

The included Titanium Enhanced Bi-Metal Blades use premium high-speed steel and last up to 15X longer than standard high carbon steel (HCS) blades

They will not crack

for converting jaw type lube couplers to seal needle points

A single PCV1 ventilates 1650 cubic feet

Century Drill And Tool Hole Saw Arbor Attached 2-1/2″ Size:2-1/2″ The included Titanium Enhanced Bi-MetalProfessional 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