20PCS HSS Gold Cobalt Drill Bit, 3mm 4mm 5mm Twist Drill Bit for Stainless Steel Hard Metal Cast Iron Copper Aluminum Wood Plastic, Metric HSS Twist Cobalt Drill Bits Set
Carreuty
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Product Features
High Speed Steel: The twist drill bit is made of cobalt-containing high-speed steel, quenched at high temperature, and is wear-resistant and tough. Professional Drill Bit: 135°self-centring tips, eliminates the need for pre-drilling or center punching, quickly penetrates the metal plate with less pressure, prevents walking, and removes chips and particles faster. Metal Drilling Tool: High-speed steel twist drill bits are mainly used for cutting hard and soft metals and are ideal for drilling holes in stainless steel, aluminum, iron, copper, plastic, wood and metal plates. Package Includes: 10pcs 3mm drill bits + 5pcs 4mm drill bits + 3pcs 4mm drill bits. Suitable for various electric drills, such as pillar drills, handheld electric drills, battery-powered drills, etc. Instructions for use: When using, the drill bit should be perpendicular to the metal plate and kept cool. Pay attention to heat and speed control when drilling. Ideal for professionals, home improvement enthusiasts and DIY enthusiasts
