Small enough to fit in the palm of your hand, but provides enough leverage to tighten or loosen even the most stubborn nut. Features a ratcheting box end to ensure access to the tightest areas. 7 piece set in sizes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4. Flex Head. 3 lbs (1.5Kg) shipping weight.