Dormer A0023.5-10 A002 HSS-TiN Coated Tip Jobber Drill 3.50mm (Box of 10) With their tiny 3.5mm diameter, the Dormer A0023.5-10 A002 Jobber Drill Bits are great for precise drilling in metal and other materials. Though small, they are robust and durable thanks to their HSS construction and tin-coated tips. This model comes sold as a box of 10. 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: 3.5 mm Cutting Length: 40 mm Overall Length: 70 mm