The Steelsmith Step Drills incredible cutting edge makes them extremely durable and long lasting. The four spiral cutting edges halves drilling time. Designed to enlarge holes for steel, sheet metal, fibreglass and plastic, the Steel Smith step drills get the job done quickly and without the need to pre-drill. Outstanding four flute twist design Strong and durable Maximum edge life Can be used on a broad range of applications Product Name Steelsmith Step Drill Model SSD4-20 Suitable for Steel, Metal Alloys, Fibreglass & Plastic Compatible with All drills and impact drivers Material High Speed Steel (HSS) M35 Grade Diameter 4mm to 20mm Thickness NA Bore NA Length Shaft 2.5cm, Overall 8cm Width NA Size Range 4mm to 20mm Maximum Speed NA Packaging 1 drill per case Weight 55 grams per case
