Syntus 71 in 1 Precision Screwdriver Set is made of S2 tool steel which adopt carbon, silicon, manganese, chromium, molybdenum and vanadium. It’s a great tool set for whether a professional technician or an average person on the preservation and maintenance of precise work and optics facilities, such as precision watches, mobile phones, televisions, mobile phone, PDA, PC and other applications.
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