Complete drilling, tapping and countersunk drilling with one operation with power drill saves effort and time.
Back tapers over taps to prevent damage to screws caused by overdrilling
Drilling and tapping in one step process greatly saves processing steps and time costs and improves work efficiency
Can be applied to drilling holes of some types of carbon steel and ordinary steel, copper and aluminum magnesium alloys
Constructed of hardened high-speed steel material compared to carbon steel for long life
Package Included: 6 x Drills
Note
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