PurposeUsed on Zephyr attachment for running down fasteners in limited access areasUsed WithZephyr attachmentWhere UsedLimited Access AreasWrench Size5/16Opening Shape6Wrench End TypeSocketWrench Body TypeStraightWrench VariationStandardDrive TypeExternal ThreadDrive Size10-32 UNFHead Outer Diameter0.50Overall Length0.50