General description This is a high-quality combined threading drill bit designed for precise cutting in metalworking applications. The Dormer E650M8 HSS Metric Coarse Combination Drill & Spiral Flute Tap allows for drilling and threading holes in one single operation, featuring right-hand spiral grooves for creating internal threads with accuracy and durability. Technical specifications Size: M8 Tip Diameter: 6.8mm Overall Length: 96mm Shank Length: 9mm Shank Diameter: 8mm Square Size: 6.3mm Cutting Direction: Right-hand Coating: Vapor tempered Shape: C 2 - 3 Tolerance Field: 6H Number of Cuts: 2 Standard: DORMER-ISO Cutting Material: HSS (High-Speed Steel) Compatibility and accessories Compatible with standard drill chucks that accept 8mm shanks Suitable for use with compatible tapping and threading tools Installation Insert the shank into a compatible drill or tapping machine Ensure the drill is set to rotate clockwise for right-hand threading Secure the bit firmly before operation