The application of titanium nitride (TiN) strengthens the drill blade, making the drill much longer. Manufactured by profile grinding from high-quality HSS steel with a hardness of 64-64 HRC. This provides a small value of axial and radial runout. Thanks to the alloy with the addition of 6% Tungsten and 5% Molybdenum, the drill is able to withstand high temperatures, and 4% Chrome and 2% Vanadium in the composition prevent drill corrosion, prolonging the life of the product. Cross-shaped sharpening angle 135 degrees, class accuracy A1. Designed for drilling holes in carbon and alloy steels, gray and ductile irons, non-ferrous metals and plastics.
Material: high speed steel.
Packing: hanging plastic box.
5 pieces. packaged.
Article Description Package
52-451 7х109 mm 10/100
52-452 7.5×109 mm 10/100
52-453 8×117 mm 10/100
52-454 8.5×117 mm 10/100
52-455 9х125 mm 10/40
52-456 9.5×125 mm 10/40
52-422 10×133 mm 10/40
52-423 11×142 mm 10/30
52-424 12×151 mm 10/30
52-425 13×151 mm 10/30















