1/2" Drive x 27mm Deep - 12 Point GRE2127MD Welding Helmets and Replacement Lenses achieving a precise fit is

achieving a precise fit is essential

3/8" Drive x 3/16" 6" Length Hex Drive

and comes in a nice display case

nut or stud

1/2" Drive x 27mm Deep - 12 Point GRE2127MD Welding Helmets and Replacement Lenses achieving a precise fit is1 2" Drive x 27mm Deep 12 Point Features and Benefits Made of high quality steel (chrome molybdenum) 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 Lifetime Warranty The impact socket features high torque drive. This feature limits the amount of wear on the corners