Irwin Tools 30519 19/64-Inch Cobalt Alloy Steel 135-Degree, Left Handed-Mechanics Length, Pack of 6 Tools 2Designed for rapid cutting of

2Designed for rapid cutting of 6-inch through 8-inch steel pipe

The flute of the bit is designed for fast removal of the concrete dust from the hole

35663 Screw

weld spatter

Irwin Tools 30519 19/64-Inch Cobalt Alloy Steel 135-Degree, Left Handed-Mechanics Length, Pack of 6 Tools 2Designed for rapid cutting ofM 42 Cobalt Alloy Steel Construction for Durability in abrasive materials 135 Degree Split Point Tip for reduced bit walking Straight shank works in both keyed and key less drill chucksThe Irwin Tools 30519 19 64 Inch Cobalt Alloy Steel 135 Degree Left Handed Mechanics Length Bulk Pack of 6 is made of M42 Cobalt Alloy Steel Steel. The Cobalt Alloy Steel steel helps discipate heat, which is the killer of all drill bits, providing it with longer life