This high-quality HSS step drill bit from Silverline is designed for professional use, capable of drilling steel, non-ferrous metals, and hard plastics. It creates accurate holes or enlarges existing ones in metals up to 4mm thick. The drill features clearly marked 2mm graduations from 14mm to 26mm. Its precision-ground, multi-flute cutting edge ensures burr-free holes, and the self-centring point eliminates the need for pre-punching. The titanium coating provides extra wear resistance, making it a reliable choice for trade professionals. Ideal for drilling sheet metal or enlarging existing holes.