Dormer L000E500M5NO2XA002 HSS Duo M5 Tap + 4.2mm A002 Drill (Set Of 2) The Dormer L000E500M5NO2XA002 consists of a General Purpose Drill with a 4.2mm diameter and an M5 Tap. The drill is made from High Speed Steel with a Titanium Nitride coated tip for longer life. The 2 piece set features a tap and its corresponding pre-hole drill in one convenient package, helping to save time and error. Features: Straight flute designed for threading both through or blind holes Bright finish helps prevent built-up-edge when tapping sticky materials High-Speed Steel (HSS) provides good hot hardness when drilling 118-degree split point provides self-centring, low thrust and easier penetration For use on machines or handheld applications Specification: Drill: Head Diameter: 4.2mm Cutting Length: 45 mm Overall Length: 75 mm Tap: E500 M5 6H