CR-MO alloy steel for long life Designed to extend the life of fasteners. Features a radius corner design causing the socket to grab the sturdy wall, or flat, of the fastener instead of grabbing the corners. This results in less corner wear on the fastener. Lifetime Warranty -- full replacement. Sizes Include: 3/8" 7/16" 1/2" 9/16" 5/8" 11/16" 3/4" Sunex 3656 3/8" Drive 7-Pc 6 Point Deep Swivel Universal Flex SAE Fractional Impact Socket Set
From the Manufacturer
This Sunex 3/8 inch drive 7 piece SAE deep universal socket set includes the most common sizes used for automotive repair. It includes 7 SAE sockets. It is made of CR-MO alloy steel for long life. It is fully guaranteed and includes a heavy molded storage tray.