All sockets forged from high quality CR-MO steel for long life Includes most common SAE and metric hex sizes used for automotive repair Heavy duty blow mold case provides durable and convenient storage Fully guaranteed Set Includes: 1/4", 9/32", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"