TOP Step drill for tapping holes for electric drills, 7 steps, drilling dimensions Φ3.3 to 13.0 ESD-412T 1 piece

Catalog number: ESD-412T Features: ●Step drill exclusively for pilot holes for taps. ●6 sizes in one, so pilot holes can be drilled without the troublesome task of changing drills. ●Straight blade type for accurate drilling. ●Titanium coated, very effective when drilling a lot of holes in stainless steel. ●Prevents chip adhesion and allows for stable continuous work. Applications: ●Cutting materials: Steel plate (up to 3mm), stainless steel plate (up to 2mm), aluminum plate, plastic, wood. ●For a wide range of general screw threading fields such as electrical work and mechanical equipment. ●For tapping pilot holes for metric coarse threads M4, M5, M6, M8, M10, and M12. Specifications: ●Step width (mm): 5 ●Number of steps (steps): 7 ●Shank shape: Hexagonal shaft ●Shank diameter (mm): 6.35 ●Drilling dimensions (φ): 3.3, 4.2, 5.0, 6.8, 8.5, 10.3, 13.0 ●Total length (mm): 73.5 ●Surface treatment: Titanium coating ●Step drill for tapping holes. M4 to M12 sizes available. Comes with a stopper to prevent slipping out. Material/Finish: ●Cobalt high speed steel Set contents/Accessories: ●None Caution: ●For rechargeable driver drills, use 12V or higher. ●The drill generates heat during use, so touching it with bare hands may cause burns. ●Do not use the tool for any purpose other than its intended use. ●※Be sure to use cutting oil on stainless steel plates.