Neiko 02400A Drive Thin Wall Flip Impact Socket Set (3 Piece), 1/2" Flip socket kit is designed with unique duo socket ends that provides a wide range of tire lug nut sizes ranging from everyday models to European models The flip sockets are constructed of heat treated chrome molybdenum steel for extra strength and durability The reduced wall thickness improves your reach and access to fasteners in restricted areas Set includes: two flip sockets (19mm x 21mm and 3/4" x 13/16") and a 3" impact extension bar for those who have a short shank impact tool Each socket is labeled with the size for easy access and comes in a case for easy storage