PREMIUM CARBIDE HOLE CUTTER: Maximize longevity with heavy-duty, durable construction HEAVY-DUTY CUTTING: Cut clean holes in stainless steel, mild steel, iron, copper, and brass sheets up to 3/16-Inch (0.5 cm) thick DURABLE CONSTRUCTION: Maximize longevity with heavy-duty, durable construction ENHANCED ACCURACY: Prevent bit wandering with the split point pilot drill bit CONTROLLED DRILLING: Built-in flange stops over-drilling on sheet metal surfaces REPLACEMENTS PILOT: Compatible with replacement pilot bit (Cat. No. 31874) CONDUIT AND PIPES: For 1-1/4-Inch (3.2 cm) conduit and pipe sizes