Set of Hex Socket Drill Bits Taper Drill Bits High Speed

Hex Combination Drill Bits: 6 steel drill bits for drilling wood, plastic, copper, aluminum, and other metals (5-6 mm), drill bits High-speed steel drill: saves processing steps and costs, improves work efficiency, combination drills Metric tap drill bit: there are a total of 6 taps in different sizes that you can use to tap various threads, hex drill bit Screw tapping tool: the tap design has spiral flutes for better chip removal, spiral tapping bits Countersink drill bit: when drilling, it is necessary to inject water to cool the drill bit, metric tap drill bit