6pcs/sets M3-M10 High-speed Steel Drill Bit 1/4''Hex Thread Spiral Screw Tap
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Features: ● 100% brand new and high quality. ● Metric Taper Plug Tap tapping drill. ● Multifunction drill deburringcountersink hex bit kit. ● Superior light transmission and brightness. ● Back tapered beyond tap to prevent thread damage from over-drilling. ● Suitable for soft tapping metal, aluminum, iron. ● Ideal for auto repair and machinery where metric threads are specified.