BKlein Tools 31852 78'' Carbide Hole Cutter ReviewbP PP Klein Tools 31852 78'' Carbide Hole Cutter PCuts quick, precise holes in stainless steel, mild steel, iron, copper and brass sheet up to 316'' (5 mm) thickPSplit point pilot drill bit prevents bit walkingPIntegrated flange prevents the operator from drilling beyond the sheet metalPConduit and pipe sizes: 12''P