For long life and high performance choose The Dormer L000E500M8NO2XA002 HSS Duo M8 Tap + A002 Drill The Dormer L000E500M8NO2XA002 consists of a General Purpose Drill with a 6.8mm diameter and an M8 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: For use on machines or handheld applications Straight flute designed for threading both through or blind holes High-Speed Steel (HSS) provides good hot hardness when drilling Bright finish helps prevent built-up-edge when tapping sticky materials 118-degree split point provides self-centring, low thrust and easier penetration Specification: Tap: E500 M8 6H Drill Cutting Length: 70mm Drill Head Diameter: 6.8mm Drill Overall Length: 110mm