FIELD: handle tool. SUBSTANCE: when the wrench is rotated in one direction, parts 3 and 4 of the wrench jaws work. When the wrench is rotated in opposite direction similar parts 5 and 6 of the jaws work. To exclude damage of the nut sides the transition part between working parts 3-6 and guide parts 7 and 8 should be rounded with a radius of 0.5-1. EFFECT: enhanced reliability. 1 dwg
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