General description The Professional HSS Step Drill is a versatile cone drill bit set designed for drilling through various materials including stainless steel, metal, wood, and plastic. With a cutter size range of 6-60 mm, this drill is ideal for both professional and DIY applications. Technical specifications Cutter size: 6-60 mm (includes sizes: 6, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 mm) Handle length: 12 mm Material: High speed steel Total weight: 650 g Compatibility and accessories Suitable for: Iron plate, PVC plate, insulation board, and more Other information Contents: 1 HSS step drill