Fully ground twist drills with constant length (l=150 mm) with the centering point and special cutting edge geometry recommended for drilling wood, Formica boards, plastics, etc.
Powerful ground twist drills for drilling holes with greater depth in unalloyed and alloyed steel, steel castings up to 900 N/mm2, gray, malleable and ductile iron, sintered steels, aluminum alloys with short chips, bronze, tough brass.
Extremely powerful ground drill with high heat resistance in austenitic steel resistant to corrosion, acids and heat, but also in alloyed heat-treated tool and high-speed steel with strength up to 1100 N/mm2.
High-efficient fully ground, long drill bits suitable for alloyed steel, cast steel with a tensile strength over 1200 N/mm2, volume cold or hot steel working,crankshafts steel for case-hardening and refining, stainless steel.
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