4-22 mm Titanium Coated Spiral Grooved Step Drill Bit, 1/4 Inch Hex Shank HSS Step Drill Bit for Plastic Wood Metal Multi-Hole Taper Drill

【Specifications】 - Shaft: 1/4 inch quick change hex shaft. - Finish: titanium. - Material: HSS. - Size: 4-22mm: 4,6,8,10,12,14,16,18,20,22mm. - Tools: pistol drill, bench drill. - Total: 77 mm (L). 【▲ What You Get】 - 1 x 4-22 mm HSS Step Drill

• 10 Step Sizes: 4,6,8,10,12,14,16,18,20,22 mm. HSS 4241 high speed steel with titanium coating for strength and durability. Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance.
• The 1/4-inch hex shank is compatible with impact-resistant power tools and allows for quick, easy and convenient step drilling.
• Two-flute design for smoother cutting. High step design makes you feel the stop and never drill bigger by accident. 135° X-type split point C. Increases cutting speed by self-centring and prevents walking.
• The step drill bit is durable and strong enough to punch and drill clean holes in materials such as wood, plastic, etc. It can also help enlarge existing holes and clean edges.
• Suitable for hand drills, drills, milling machines and machining centers, for sheet metal, maintenance and modification, bridge doors and windows, household appliances.