This fits your .
' Flare Nut Crowfoot Wrench, SAE, Number of Points 12, Drive Size (In.) 3/8, Size 7/8", Meets/Exceeds Federal Specification GGG-C-1507A '
Crowfoot wrenches are used in hard to reach, restricted access situations where a standard wrench or ratchet cannot reach. Use with locking extensions to reach into spaces too small for a mechanic's arm or where the fastener is out of site.
Stanley Proto J4928FL 12 Point Flare Nut Crowfoot Wrench 3/8" Drive 7/8" - B001HWCN6O