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 7.5x109 mm 10/100 53-489 8x117 mm 10/100 53-490 8.5x117 mm 10/100 53-491 9х125 mm 10/40 53-492 9.5x125 mm 10/40 53-458 10x133 mm 10/40 53-459 11x142 mm 10/30 53-460 12x151 mm 10/30 53-461 13x151 mm 10/30