Contains 1 each of: 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, and 13mm nutsetters. For use on hex head screws and nuts. Fits all drills and screwdrivers.Warning: This product can expose you to chemicals including lead which is known to the State of California to cause cancer. For more information go to