• Round type steel core made from S2 material.

  • Diamond coating to increase the friction up to 30% to save the laboring on tightening the screws, and reduce cam-out forces to protect your both screws and tools.

  • Twin-color handle, made from oil proved material.

全国热线 : 021-69925636

公司邮箱 : Sales@jtctools.cn

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