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4-20/22mm HSS Hole Drill Titanium Coated Step Drill Bit for Metal Drilling1
Drilling ToolsTwist Drill BitsStep Drill Bit
Johnson Tools Manufactory Co., Ltd.
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Product Description Product Name4-22mm Spiral Groove Hexagonal Handle Step Drill Bit for Metal DrillingMaterialHigh Speed Steel 4241Connection1/4" Hex ShankSize10-step drill bit 4-12mm: 4, 6, 8, 10, 12,14,16,18,20,22mmFeatures1. Strong Durability: coated by titanium, the bits have strong durability. This step drill set performs well in heat, corrosion and rust resistance.2. Premium HSS Material: High-speed steel construction for longer cutting edge life even at extreme temperatures.3. Automatic Center Punch: Delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force4. Wide Usages: Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.
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