General description 13-piece twist drill bit set featuring a straight round shank design, made from M35 high-speed steel with cobalt for enhanced hardness. The titanium coating reduces friction, allowing for fast drilling in various materials, including metals and wood. This set is ideal for drilling aluminum, iron, and other metal pipes. Technical specifications Coating: Titanium Coated Diameter: 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm Shank: Round Material: High-speed steel Compatibility and accessories Compatible with hand drill chuck, bench drill, radial drill, etc. Package Contents: 13 x steel twist drill bits, 1 x Center Punch Other information