Features:* This is a new large diameter HSS steel tapered drill bit.* Made of high-quality HSS steel and coated with titanium to reduce friction and heat.* It is very suitable for cutting holes in a variety of materials, including thin steel, brass, wood, plastic, etc. Specifications:* Material: High Speed Steel (HSS)* Color: Silver* Flute: Spiral * Shank Type: Triangle Shank * Shank Diameter: 10mm * Size:4-32mm (15 steps):4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm Package Contents:1 * Step DrillNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.