General description Neilsen Step Drill HSS Steel Titanium Cone Bit is designed for drilling holes in metal with precision and ease. This versatile tool features a range of sizes, making it suitable for various applications in DIY and professional projects. Technical specifications Material: HSS Steel with Titanium coating Drill size range: 6mm to 60mm Shank diameter: 13mm Step sizes: 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm