Wheel Spanner 4 way cross wrench Cross spanner, a hand tool that uses the lever principle to turn bolts, screws, nuts and other threaded fasteners to hold the openings or sockets of bolts or nuts. Cross wrench is usually equipped with a clamp at one or both ends of the handle. When the handle applies external force, the bolt or nut can be screwed to hold the opening or sleeve hole of the bolt...