Up to 50X life - high performance carbide is welded to the cutting edge for durability and to help prevent tooth loss|Extremely versatile aggressive tooth design drills through wood, steel, stainless, cast iron, fiber cement and plaster|Fast, easy plug removal - patented speed SLOT® staircase design has multiple leverage points for easy plug ejection|Drill through thick materials in one phase - tall body easily drills through 2x dimensional lumber for rough-in work|900 rpm aluminum/350 rpm stainless steel/140 rpm fiber glass/270 rpm ceramic tile/110 rpm cast iron

OSHA 29 CFR 1910.1200