S2-Steel
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About this item All-in-One Design: This screwdriver set boasts 25 magnetic bits in 10 mainstream types, all bits are made from S2-steel that can hold its own ...
Dave
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About this item All-In-One Design: HOTO electric screwdriver set includes 5 types of 12 2-inch S2-steel bits, each with a hardness rating of up to 60HRC. They ...