3 PCS Step Drill Bit, High-Speed Metal Hole Drill Bits Set for Steel, 4-12mm, 4-20mm, 4-32mm, Titanium Plating Drill Bits for Metalworking, Woodworking Tools for DIY Lovers

Specification:Material: high speed steel.Surface Treatment: TitaniumColor: Gold.Weight: 110 gramsHex shank prevents slippage when chucking for smoother cuts.Suitable for drilling holes in steel, brass, wood, plasticProduct packagingThe product comes with a simple packaging bag, which can be put in when not working to avoid lossSize:4-12 5 Steps (Diameter 4, 6, 8, 10, 12mm)4-20 9 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20mm)4-32 15 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm)

• ✅【Package Included】Includes 3 pieces of HSS groove step drill bits (4-12/ 4-20/ 4-32mm). Packaged in a black cloth bag.
• ✅【Size】Drilling diameter: 4-12 5 Steps (Diameter 4, 6, 8, 10, 12mm); 4-20 9 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20mm); 4-32 15 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm). The hex shank is 6.35mm (1/4") long across the sides.
• ✅【Material】Made of high-quality high-speed steel for durability and strength, with a titanium coating on the surface to reduce friction and heat. Perfect round holes can be drilled in steel, brass, plastic, wood and more.
• ✅【Easy Drilling】Double-edge spiral flute design removes chips, dust and debris for clearance and smooth cutting. Each step is clearly marked with the depth diameter of the step, and the high-end design makes it easy for you to feel stopped and not easy to drill big by mistake.
• ✅【Quick Change】1/4" hex shank, can be used with most drills or drills with 1/4" collet, fits securely in power tool chuck and eliminates slippage.
• ✅【Widely used】Step drill bits are suitable for drilling holes in various materials: within 3mm/0.12 inches (iron plate, copper plate, aluminum plate); within 5mm/0.2 inches (wood, PVC plate, insulating plate). Suitable for sheet metal, sink, auto repair, etc.