Wenzhou Zhongyang Hardware Tools Co., Ltd.
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Contact:Mr Hong
Telephone: +86-577-85311802
Mobile Phone: +86-13806806045
Fax: +86-577-85319895
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Square wrench

JB /T 3411.35-1999
    
grade, rigidity    grade 8.8
Coating    black oxide coating

This product corresponds to the standard

JB /T 3411.35-1999