HSS Twist Drill Bit Set, Titanium Nitride Coated, 19 pcs.

Right-hand cutting, type N, titanium-nitrided, precision ground, gold colour, 135° tip grinding angle, with split point, self-centring, cylindrical, high-quality surface finish for low friction and long service life even at the highest load levels of materials such as alloy and non-alloy steel, cast steel, malleable cast iron, sinter iron, nickel silver, copper, bronze, hard plastics, metal case.