This Sunex 3/8 inch drive weatherhead socket master set includes the most common sizes used for automotive repair. It is used to remove and install Weatherhead fittings and in 90 degree elbow joint applications. It is ideal for hydraulic hose and fitting removal and installation. The set is packaged on plastic rail for tool box storage. These individual sockets are not intended for use with an impact tool of any kind. Set includes 13 SAE sockets: 7/16" (991301), 15/32" (991302), 1/2" (991303), 17/32" (991304), 9/16" (991305), 19/32" (991306), 5/8" (991307), 11/16" (991308), 23/32" (991309), 3/4" (991310), 25/32" (991311), 27/32" (991312), 29/32" (991313), (1819CE), 27/32" (991314).