The Hammer Head Miners Wrench, the sister wrench to thel RS-12 Adjustable Wrench, since 1988. Featuring a special wide opening and is the largest available in its class in a 12” adjustable wrench. It is equipped with a hammer portion on the head of the wrench so as to not damage the moving jaw if used as a striking tool. The 7/8 box end portion is used for pulling drill steel and accommodates nuts on 1”-3” Victaulic couplings. This wrench can be used in various trades including, but not limited to, mining, forestry, automotive and construction. Meets all of the U.S. and Canadian specifications making it the top of its class.