Dormer 14pc Set, features E500 straight flute taps and A002 TiN Coated Jobber Drills is ideal for a wide range of general purpose machining applications. It features the Dormer E500 straight flute taps and A002 TiN coated jobber drills. E500 Metric coarse straight flute taps M3, M4, M5, M6, M8, M10 & M12 Straight flute taps are the only type of taps that can be used by hand, but they may also be used in a machine if required. They can be used for either through or blind holes. When tapping blind holes straight flute taps should be used in sets. Tolerance Class 2 for 6H Fit. Surface treatment Bright. Material HSS High Speed Steel. Chamfer No 1,2 and 3, Serial no 4 and 5. Flute Geometry Straight Flutes. A002 HSS-TiN Coated Jobber Drills 2.5mm, 3.3mm, 4.2mm, 5.0mm, 6.8mm, 8.5mm and 10.2mm. General purpose drills, made from High Speed Steel with a Titanium Nitride coating for longer life, with good self centring capability on a wide range of materials. Particularly suitable for aluminium and other abrasive materials. Ideal for drilling wood and chipboard. Suitable for both hand and machine use. DIN338RN/BS328/ISO235.