These fittings were designed for the use of a Late Style GM power Steering Box on Early GM cars, such as Tri 5 Chevys, early Camaros and Chevelles, etc. to be able to use the stock hoses.
P/N 11700 16mm to 3/8 x 45 deg. female inverted
P/N 11710 18mm to 3/8 x 45 deg. female inverted
P/N 11715 16mm & 18mm ( pair )