*Features hinged jaws allowing the wrench head to fit to parts of varying sizes within a range *Used to tighten, loosen or hold machinery components such as retaining rings, couplings, or any notched or multi-faced tool *Manufactured from drop forged vanadium steel for longevity and durability *Ideal for automotive, industrial, plumbing and hardware applications *Size range: 112-158mm/4 1/2"-6 1/4"