Vintage NTK open-end wrench set, for Whitworth fasteners

NTK open-end wrench set, for Whitworth fasteners Good condition, with original clip. Please note these are Whitworth wrenches, and are primarily useful for working on vintage British cars and motorbikes. They do not fit SAE or metric fasteners. Sizes: - 3/16 x 1/4 - 1/4 x 5/16 - 5/16 x 3/8 - 3/8 x 7/16 - 7/16 x 1/2 - 1/2 x 9/16