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Contact Suppliersparkless copper alloy socket wrench 1" 75mm, drive square
1 material:aluminum copper or beryllium copper
2 color:nature or green
3 hardness:al-bronze(25hrc) be-bronze(35hrc)
4 tensile strength: aluminum-bronze(75-85kgf/mm) beryllium-bronze(105-120kgf/mm.)
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