The farrier's wrench is a metal tool that performs several functions. It is made of a single piece of metal in which holes of different shapes and sizes are drilled and at the ends of which are pointed elements. The sharp parts are used to dig and remove dirt from the hooves. The concave parts are used to screw metal nuts to the hooves. These nuts added to the shoes of the animals have the function of crampons to help them have a better grip on the ground.