The Dormer A321 Heavy Duty HSS Drill is specifically designed for reliable performance in medium-depth drilling applications. Its tri-flat shank ensures a secure, non-slip fit in the chuck, making it ideal for both hand-held drilling and use with pillar drill machines. The drill's self-centring 135° split point minimises thrust force, ensuring efficient and precise drilling. Its steam and bronze-tempered surface finish enhances lubricity, reducing friction and wear during use. Engineered for versatility, this drill is well-suited for drilling into a wide range of thin-walled materials, delivering durability and consistent results. Features and Benefits • Steam and Bronze Tempered Surface Finish • High Speed Steel Tool Material • 3.5×D Usable Tool Depth to Diameter Ratio • Drill Point 135° • Cylindrical Shank with 3flat • Right Hand Rotation / Cutting • h8 – Industry Standard Tool Tolerance Zone (based on diameter range)