Spiral Grooved Step Drill Bit Set HSS Titanium Hole Drilling Spiral Flute Cobalt Step Cone Drill,Carbide Step Drill Bit Woodworking Drill Bit HSS

Cutting and deburring: steel, sheet metal and other surfaces can be cut with only a small amount of pressure and deburring when drillingFeature:1. High-speed steel material, more durable.2. Titanium coating reduces friction and cools3. No pilot hole is required, and the hole can be deburred automatically when drilling.4. Special ladder structure, can drill holes of different sizes,5. With water cooling, it can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400. It is widely used to cut holes in various materials, such as steel, wood, thin iron, aluminum alloy, insulation board, PVC board, etc.specification:Material: High-speed tee (for materials with hardness below 25°, such as iron plate, steel plate, PVC plate, insulating plate, etc.)Surface: titanium coatingTool holder: roundSize: 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 2mm)4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 14mm, 16mm, 18mm, 20mm)4-12mm (4mm, 6mm, 8mm, 10mm, 12mm)note:Due to manual measurement, please allow an error of 1-3mm.Due to the differences between different monitors, the picture may not reflect the actual color of the project.Package Included:1 step drill

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