The Wera 848 HSS Metal Twist Drill Bit in 4.2mm is an ideal choice for M5 tapping preparation, offering the precise undersize diameter needed to produce clean, well-formed threads in steel and other metals. The HSS split point tip cuts cleanly on contact without skating, ensuring accurate hole placement every time. With finely-tuned material elasticity engineered into the HSS body, this bit absorbs torsional stress during drilling, extending service life and maintaining dimensional accuracy. Vis
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