An Adjustable Wrench Is A Hand Tool That Can Fit Different Sizes Of Nuts And Bolts. This Versatile Tool Is A Staple In Every Toolbox, And For A Good Reason- It Can Handle Various Sizes Of Nuts And Bolts With Ease.Simply Put, It’S A Type Of Wrench With An Adjustable Jaw That Can Be Set To Fit Different Sizes Of Nuts Or Bolts.