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High Quality HSS step drills for professional use. Precision ground, multi-flute cutting edges produces accurate burr-free holes. Also features a self-centring point which eliminates the need to pre-punch. Titanium Nitride (TiN) coated for extra wear resistance. Used to create accurate holes or enlarge holes in metals up to 10mm thick.
Application: Steel, non-ferrous metals and hard plastics up to 10mm thick
HSS Metal Working Set 4 Piece