Dormer HSS Twist Drill Bit, 15mm Diameter, 156 mm Overall

HSS plain stem drill bits with Ø 12.7 mm A170

Series of HSS plain stem drill bits of diameter 12.7 mm at a normal helix of 30° and sharpening of 118°.
These drill bits are for general piercing of steel, cast iron, etc.
The reduced stem of 12.7 mm allows work with machinery equipped with spindles with a maximal capacity of 13 mm (1//2").