Features and Benefits: Made of high quality steel (chrome-molybdenum); thorough and exact heat treatment insures the correct balance of strength and durability Engineered specifically for use with impact tools using the most up to date industrial specifications Made to transfer the pressure from the thinnest part of the socket wall toward the thicker section resulting in increased strength Packaged in a metal case Lifetime Warranty Contains Sizes: 3/4 13/16 7/8 15/16 1 1-1/16 1-1/8 1-3/16 1-1/4 1-5/16 1-3/8 1-7/16 1-1/2 1-9/16 1-5/8 1-11/16 1-3/4 1-13/16 1-7/8 1-15/16 & 2 in a metal storage case.