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.