General description This Dormer A170 Hs 1/2In Parallel Shank Drill is a high-quality spiral drill bit designed for metal drilling. It features a standard helix and right-hand spiral, making it ideal for a wide range of materials where chuck holding capacity is limited. This drill is suitable for both hand and machine use, and is often referred to as a Blacksmiths drill. Technical specifications Tip diameter: 20.0 mm Overall length: 158 mm Working length: 81 mm Material: HSS (High-Speed Steel) with vapor coating Point angle: 118° Tolerance: h8 (nominal diameter) Maximum drilling depth: 4xD Compatibility and accessories Compatible with standard drill chucks for 1/2" (12.7 mm) shanks Suitable for use with metal drilling machines and hand drills Installation Insert the drill into a compatible drill chuck, ensuring a secure fit Adjust the drill speed according to the material being drilled, typically lower speeds for metals Usage Use for drilling holes in steel and other metals Ensure