In inches, standard American wrench sizes go from 5/8 to 19/32 to 9/16 to 1/2 to 7/16 to 3/8 to 11/32 to 5/16 to 9/32 to 1/4 to 3/16 to 5/32 to 1/8. Wrenches can be bought as a set or on their own.
The wrenches in a small set range in size from 5/16 inch to 1 inch. Standard wrenches come in sets that range from 1/16 inch to 1 1/2 inches. The length of the tool depends on how big it is. It can be anywhere from 4 inches to 2 feet long. A longer tool needs more force to tighten a larger nut, and vice versa. Length also helps keep bolts from breaking off when too much force is applied.
Two wrenches of the same type and size can have very different prices because the way they were made and the materials they were made from are different. Vanadium or chrome alloy wrenches tend to be the best and most expensive. Sheet metal and molybdenum wrenches, on the other hand, are less expensive. Stamped wrenches made from sheet metal tend to be big and are best for places where strength is needed. They are also the best choice for light-duty work that doesn’t happen very often. But if you use them often, like when you work on your car, the more expensive tools are better.