Set de burghie pentru metal DeWalt - Extreme DT4939-QZ, 8.5 x 117 mm, 10 buc.
The metal drill bit set DT4939-QZ from DeWALT consists of 10 pieces designed for precise drilling of hard metals. The drill bits are made of HSS-E high-speed steel with 5% cobalt content, providing high resistance to heat and wear during intensive work. This material guarantees up to 4 times longer service life and increased resistance to breakage compared to standard HSS-R drill bits. These drill bits are suitable for drilling high-alloy steels and metals with tensile strength up to 1100 N/mm², including stainless steel, cast iron, bronze, and titanium. The special No-Walk tip with a 135° angle prevents slipping at initial contact and allows quick and easy penetration into the material. The shank with three flat sides ensures a stable grip in the drill chuck, eliminating the risk of slipping during operation. Set contents: 10 pieces of DeWALT DT4939-QZ metal drill bits with a diameter of 8.5 mm. Features: Diameter: 8.5 mm; Total length: 117 mm; Working length (cutting length): 75 mm; Drill bit material: HSS-E high-speed steel with 5% cobalt (HSS-Co 5%); Cutting edge sharpening angle: 135°; Shank type: cylindrical with 3 flat sides (anti-slip); Shank diameter: 8.5 mm; Number of cutting edges: 2; Intended use: for steel, stainless steel, cast iron, and non-ferrous metals with tensile strength up to 1100 N/mm²; Standard: DIN338; Cutting direction: right; Quantity in set: 10 pieces; Manufacturer: DEWALT Industrial Tool Co.; Set weight: 0.41 kg.