Type KSB conical Cone 20°, twist ground inside, HSS, TiN coating, cylinder(without flat, HA), three-surface grind The progressive boring drill makes holes in thin materials without pre-boring, and expands existing holes. Can also be used for slanted holes and tubes. Because of TiN coating has longer useful life, higher cutting speeds and reduced edge build-ups.
Is part of: 257760 Set of taper drills
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