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由三角形凸轮和滚柱组成的揳入式扳手,可以传递很大的扭矩,而且在螺钉端不需要一字、十字槽或内六方槽。用这种扳手的螺钉有两方面的优点:第一是它所特有的防干扰性,如果没有特定的扳手是无法拆下螺
A snap-in wrench consisting of a triangular cam and a roller can transmit a large amount of torque without the need for a word, cross or slot in the screw end. The screw with this wrench has two advantages: The first is its unique anti-interference, if there is no specific wrench can not be removed screw