The drill bit is made of high quality HSG steel. The unique step-hardening gives the highest hardness of the cutting edge and drill shank, and also contributes to increased resistance to fracture. The drill has a cruciform sharpening angle of 135 degrees, accuracy class A1, which ensures low runout and allows you to produce accurate and uniform holes. 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. 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
53-487 7х109 mm 10/100
53-488 7.5×109 mm 10/100
53-489 8×117 mm 10/100
53-490 8.5×117 mm 10/100
53-491 9х125 mm 10/40
53-492 9.5×125 mm 10/40
53-458 10×133 mm 10/40
53-459 11×142 mm 10/30
53-460 12×151 mm 10/30
53-461 13×151 mm 10/30















