Abracs BSDB21013 Blacksmith Drill Bit suitable for use in steel, cast iron and non-ferrous metals The Abracs BSDB21013 is a 21mm diameter HSS Drill Bit measuring 210mm long, with a 145mm working length and 13mm Shank. High-Speed Steel (HSS) is the most commonly used alloy steel for metal drill bits, featuring a high level of hardness. The Abracs Blacksmith Drill Bit Range has large diameter with smaller shanks sizes to enable use in standard chucks. Suitable for use in steel, cast iron and non-ferrous metals. Features: Manufactured from High-Speed Steel Designed to enhance productivity Long life, speed and efficiency Blacksmith range covers diameters from 13mm to 25mm Specification: Part number: BSDB21013 Diameter: 21mm Overall length: 210mm Working length: 145mm Shank: 13mm