Comprehensive socket set includes 3/8″ and 1/2″ ratchet handles; 3/8″ x 3″ ext bar; 3/8″ spin disk; 1/4″ spinner handle; 1/4″ imperial sockets (1/4″, 5/16″, 3/8″); 1/4″ M x 3/8″ F adaptor; 12 x 1/4 sockets (5/32 to 1/2″), 3/8″ imperial sockets (9/16″, 11/16″, 3/4″); 3/8″ spark plug sockets (21mm, 16mm), 3/8″ metric sockets (14, 16, 17mm), 12 x 1/4″ metric sockets (4 to 13mm) and 10 x 1/2″ sockets (10 to 22mm). Comprehensive socket set includes 3/8″ and 1/2″ ratchet handles; 3/8″ x 3″ ext bar; 3/8″ spin disk; 1/4″ spinner handle; 1/4″ imperial sockets (1/4″, 5/16″, 3/8″); 1/4″ M x 3/8″ F adaptor; 12 x 1/4 sockets (5/32 to 1/2″), 3/8″ imperial sockets (9/16″, 11/16″, 3/4″); 3/8″ spark plug sockets (21mm, 16mm), 3/8″ metric sockets (14, 16, 17mm), 12 x 1/4″ metric sockets (4 to 13mm) and 10 x 1/2″ sockets (10 to 22mm).