Snap-on hex driver (allen key driver) 9 piece set. SAE Imperial (inch) sizes: 3/32″, 7/64″, 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 5/16″, 3/8. Very expensive Snap-on set that appears to be no longer available Some rust on some drivers, but no functional problems.