The uses of adjustable pliers

Pliers are a kind of adjustable wrench. Instead of having one wrench for 1/16 inch bolts and another for 1/8 inch bolts, you can use pliers for gripping both – you could even use pliers for those metric sizes that fall between 1/16 inch and 1/8 inch without even knowing what the metric size is. Unfortunately, when the gripped object is too big, the handles of the pliers will be too far apart – unless you have variable pliers.