It is a premium quality product from JK Super Drive. It is made up of high grade steel. It comes with the phosphate finish, which prevents it from rusting. It is used to adjust or loosen nuts and bolts with the hexagonal heads. It is a multipurpose tool and its movable jaw adjusts on any size of bolt and nut. It is mostly used in automobile workshops and garages, as this one tool can be used for all bolts and nuts. One can use it for DIY applications like small repairs at home. It comes with strong jaws and comfortable handle grip for fatigueless operation. It conforms to IS : 6149-1984.