50 pz set di strumenti punte trapano a torsione rivestite in titanio HSS per metallo legno plastica 1-3 mm

Material: Industrial Grade High Speed Steel with 5% Cobalt Alloy. Spiral Flutes Sharp spiral flutes provide fast, neat and smooth cuts. The straight shank drill is made of high-speed steel, with high hardness, good toughness, high strength, and wear resistance.

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