This combination spanner and hydrant wrench is used for fire hoses and is made of nickel-plated malleable iron. This grey wrench measures 14 3/4 length x 1 width x 14 3/4 inches height, and fits hydrant operating nuts that measure 1 1/4 square inches. The spanner for pin lug or rocker lug couplings measures 1 1/2 x 3 inches.