Dormer A160 Series HSS; Solid Carbide Tipped Twist Drill Bit, 4mm Diameter, 75 mm Overall

With this tough drill bit from Dormer in your toolkit, drilling through hard, abrasive materials is a breeze. It's made from high-speed steel with a solid carbide tip to stand up to impact and wear in heavy-duty drilling tasks. For convenience, this bit can drill up to four times its diameter without the need for pecking in cast iron.

• Diameter of 4mm for creating small holes
• Length of 75mm for drilling in hard-to-reach places

• Metalworking
• Construction sites
• Product assembly

Steam tempering involves subjecting the fluted portion of the drill bit to high-temperature steam. This hardens the flutes for increased resistance to wear and heat, which helps to reduce friction when drilling and removes chips to prevent clogging.

DIN 338; BS 328; ISO235