3pcs HSS Titanium Coated Step Drill Bit 4-12 4-20 4-32 Drilling Power Tools Metal High Speed Steel Wood Hole Cutter Cone Drill

Features: Titanium coated to reduce friction and heat. High-speed steel step drill, nice quality and durable. These drill bits works great in making a smooth, clean and perfectly round hole. Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood. This drill bit set includes 3 sizes(4-12mm, 4-20mm, 4-32mm), which meet your different needs perfectly. Specifications: Material: High-speed steel 4241 Surface Treatment: Titanium coated Shank Diameter: 6.35mm (hexagon shank) Item Weight: Approx. 83g / 2.93oz Package Weight: Approx. 84g / 2.96oz Package List: 3 * Step Drill Bit( 4-12 4-20 4-32)