敲击是即可作敲击扳手，又可作呆扳手使用的一种，其中一端有固定尺寸的开口，用以拧转尺寸在S22-S150mm的螺母或螺栓，利用杠杆原理拧转螺栓、螺钉、螺母和其他螺纹紧持螺栓或螺母的开口或套孔固件的手工工具。At one end of a fixed-size openings for screw turn in the S22-S150mm size nut or bolt, switch to the use of leverage screw bolts, screws, nuts and other threaded bolts or nuts holding tight openings or sets of holes firmware hand tools. 该类型敲击扳手或呆扳手通常在柄部的一端或两端制有夹柄部施加外力柄部施加外力，就能拧转螺栓或螺母持螺栓或螺母的开口或套孔。This type tap wrench or wrench usually stay at one end or both ends shank system, a clip shank shank to exert external force imposed by external forces, we can turn screw bolts or nuts holding bolts or nuts openings or sets of holes.
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