Size Options:the extended-length combination tap set is available in metric (M3, M4, M5, M6, M8, M10, M12) and imperial (1/8 in, 5/32 in, 3/16 in, 1/4 in, 5/16 in, 3/8 in) thread sizes. For each tap, the appropriate drill hole diameter must be selected according to a tap drill chart to fulfill diverse threading needs
HSS Spiral Cutting Blades: made of wear-resistant HSS with efficient cutting performance, these taps drill smoothly through soft metals, thin plates, and plastics, enabling drilling, tapping, and deburring in one step
Deep Chip Flute Design: the deep chip flutes help prevent jamming during drilling and reduce heat buildup caused by chip clogging, avoiding drill burn-out
Numbered Marking Handle: each tap is clearly marked with its size for easy storage and selection, preventing mistakes and ensuring accurate drilling. This saves time and improves work efficiency
Hex Shank Design: the anti-slip hex shank fits tapping machines and drill presses, ensuring stable and reliable operation
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