SAE STANDARD SIZES 3/4” 5/8” 9/16” 1/2” 7/16” 3/8”. Swivel Flex Sockets: 6 Point (Flexes in Both Directions). FLEXIBLE SOCKETS FOR HARD TO WORK AREAS. WARNING: Many food and beverage cans have linings containing bisphenol A (BPA), a chemical known to the State of California to cause harm to the female reproductive system.