Picked up a 10 piece set of standard USA Craftsman -V- crowfoot wrenches...I have no idea why.
3/8", 5/8", 3/4", 7/8", 11/16", 7/16", 9/16", 1/2", 13/16", 1 in.
According to wikipedia the crowfoot wrench (aka crow's-foot wrench) is a type of socket designed to fit some of the same drive handles as the regular socket but non-cylindrical in shape. The ends are the same as those found on the open-end, box-end, or the flare-nut wrenches. These sockets are for use where space restrictions preclude the use of a regular socket. Also used in place of conventional open/box wrenches where the wrenches are large, so the crow's-foot wrench is much cheaper, or where space and weight are at a premium, for example mobile tools.