5-35mm Titanium 13 Step Spiral Groove Conical Cone Drill HSS Bit Set Hole Cutter
Features: Automatically deburrs holes as you drill, they also help to enlarge existing holes. The two flute design tips made the penetration faster without chipping. Made from high quality HSS steel with long service time. Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.