15pc Imperial socket set in imperial AF sizes. All sockets are marked in inches, ideal for classic cars and American equipment. 15pc set includes sockets, extensions and ratchet. Supplied in a large 18" heavy duty traditional canvas tool bag with space to carry additional tools if needed. 1/2'' square drive. Professional 72 teeth (5 degree movement) ratchet with button socket release. All parts are manufactured from chrome vanadium steel. Includes 10pc Imperial Sockets in sizes 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16" & 1". Supplied on storage rail. 3pc Extension Bars 3", 5" & 10" long. (75mm, 125mm & 250mm) Professional 1/2" Drive Ratchet. 10" (250mm) Total Length. Large Canvas Tool Bag. 18" (450mm) total length.