PurposeTo adapt ratchet drive wrench to a multiple of HI-LOK collar sizes without changing the basic size of wrench and to reach into off-set positions. IE BACC30BL series collarsWhere UsedLimited Access AreasWrench Size5/16Opening Shape6Wrench End TypeSocketWrench Body TypeStraightWrench VariationReduced DiameterDrive TypeExternal HexDrive Size11/32Head Outer Diameter0.41Overall Length1.71Fastener NumberBACC30BL 