Use these handy tools to tighten or loosen 13H hex nuts on threaded fittings and tanker valves. Made from lightweight aluminum alloy with a slender handle to make anyjob easy. Size shown is nominal hex nut (pipeline) size. Jaw is actual measurement of hex (e.g. #385-7054 25H single end wrench fits a 3" hex nut but has a jaw opening of 4-1/4"). Select from three models. Short handle and additional sizes also available.