| 摘要 |
<p>An open end wrench (10) includes first and second jaws (23, 24) formed on a jaw portion (22). The second jaw (24) includes an arcuate sliding groove (27) having two support wall faces (272, 273) and an arcuate sliding wall face (271) between the support wall faces (272, 273). A slide (30) is received in the sliding groove (27) and includes an arcuate sliding face (31) slideable along the sliding wall face (272). An arcuate guiding slot (35) is formed in the slide (30). A guide element (28) is fixed in the sliding groove (27) and received in the guiding slot (35) . The guiding slot (35) includes a pressing end (352). An elastic device (40) has two ends respectively abutting the guide element (28) and the pressing end (352) of the guiding slot (35) for biasing the slide (30) toadrivingrotationposition of the slide. The slide (30) includes a first wrenching face (32) having two wings (36) and a spacing (L) is formed between each wings (36) and a face of the second jaw (24).
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