Dormer A002516 A002 HSS-TiN Coated Tip Jobber Split Drill 5/16in (Box Of 10) The Dormer A002516 A002 is a pack of 10 HSS General Purpose Jobber Drill bits for metal. They have a 5/16in diameter and also perform well in plastic and other materials. Thanks to their heavy-duty construction and Titanium Nitride coated tips, they are durable and robust for long life. Features: Can be used in many different handheld and machine applications Titanium nitride coated tip increases the service life of the drill, improving performance when drilling harder materials The 118 degree split point aids self-centring when used by hand and also reduces the push force required Improved accuracy with more accurate holes and a better quality of finish Premium HSS material can be used for drilling many materials including steels, aluminium and stainless steel Specification: DIN338 Head Diameter: 5/16in Cutting Length: 77 mm Overall Length: 118 mm