An Adjustable Wrench Is A Versatile Tool Used For Tightening Or Loosening Different Sizes Of Bolts Or Nuts. This Wrench, Also Known As A Crescent Wrench, Features An Adjustable Head That Can Be Set To Fit Different Sizes Of Fasteners. One Of The Significant Benefits Of Using An Adjustable Wrench Is That You Don’T Need To Have A Set Of Wrenches With Varying Sizes, Reducing The Clutter In Your Toolbox.