Crowfoot wrenches are used in hard to reach, restricted access situations where a standard wrench or ratchet cannot reach Fits 4, 6 and 12 point fasteners Full polish finish provides corrosion resistance and easy-to-clean surfaces 12 point flare nut allows for fine indexing, helping to improve speed and access Locking hole feature helps keep the crowfoot wrench engaged on the extension during use, reducing downtime due to detachment of crowfoot in awkward spaces.