Vise-Grip, 7LW, 7" Locking Wrench, Designed To Lock On 3 Sides Of A Hex Fastener, Tremendous Force Can Be Applied Without Damaging Or Slipping Off Fastener, Adjusts To A Range Of Sizes From 7/16" (11MM) To 3/4" (19MM), Eliminates Need For Different Standard & Metric Combination Wrenches.