Century Drill And Tool Hole Saw 4″ Bi-Metal Shark Tooth Size:4″ Motor Windings: Superior insulation materials

Motor Windings: Superior insulation materials protect against excessive moisture and contaminants…assure prolonged motor life

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Includes octagon scales

seals and insulates gaps up to 1 inch

Century Drill And Tool Hole Saw 4″ Bi-Metal Shark Tooth Size:4″ Motor Windings: Superior insulation materialsProfessional 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