Open end wrench capable of fast driving

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