ProTool 25pc Black Bronze Oxide HSS Jobbers Drill Set
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0722 25pc 1.0mm to 13.0mm Black Bronze Oxide Drill Bit Set
Black Bronze oxide coated HSS drill bits have a finish designed to help resist corrosion and they offer superior durability and speed.
Many professionals find they get years of use from them and consider Black Bronze oxide bits the best general-purpose drill bits you can buy as they can have a 50% longer life than standard high speed steel bits.
Manufacturers heat the bits to 950 degrees Fahrenheit, creating a black oxide finish that resists rust and corrosion. This reduces friction between bit and workpiece, thereby speeding up the drilling process and have a decent heat resistance.
Black Bronze oxide drill bits are ideal for both hard and soft metals but mostly used for drilling in aluminium and some tougher metals but are also suitable for drilling mild steel, copper, brass, wood, MDF, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
This set contains 25 metric drill bits - 1.0mm to 13.0mm bits in 0.5mm increments.