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HSS step drill M 12.5-40.5- especially for cable glands in electrical installation, perfect round and cylindrical holes in various diameters, centring, spot drilling, reaming and deburring in a single operation, suitable for use in hand and pillar drills in trade and industry, for sheet metal and plates, profiles and pipes made of steel, brass, copper, aluminium, V2A steel, plastic, wood, etc. up to 3 mm thick. Shank 12 mm . After hardening, additionally TiN (titanium nitride) coated surfaces are extremely hard and smooth. Higher cutting speed allows faster work, lower wear results in a 5 to 10 times longer service life!-Number of drilling steps 12-Unit of measurement ISO-Min. drilling diameter 8 mm-Max. drilling diameter 40.5 mm -Max. drilling diameter 40.5 mm Drilling diameter 40.5 mm-Max. Max. insert thickness 3 mm-Cutting material HSS-Cutting direction right-Number of cutting edges 3-Hard metal version yes-With edge breaker yes-With cooling channel no-Spiral flute no
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