Hardened and tempered with a phosphate finish for added corrosion resistance. Type: 1/2"Sq Drive. One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. Contents: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27, 30, 32mm (1 of each Standard and Deep), 125mm Extension Bar, Universal Joint.
eBay