Apex sockets. Apex hex drive sockets allow nutrunning in all types of applications. Special alloys have been developed that offer attributes suited to the specific demands of the aerospace and automotive industries. Apex industrial grade impact sockets are available in a wide range of lengths and wall thickness, and with single or double hex opening, providing the accessories needed to adapt sockets to nearly every tool and application. Apex impact sockets are specifically designed and manufactured for high impact use, and made from a tougher and more ductile alloy steel which is then heat treated for extra durability.