Features: * Made of chrome vanadium steel material, high hardness and durability. * Multiple specifications to meet different needs. * Solid connector square hole, 1/2" (12.7mm) interface, suitable for AC electric wrench, lithium wrench, air pneumatic tools and other machines. Specifications: * Type: impact wrench hex screw * Material: steel chrome vanadium stainless * Color: black * Optional size: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 21mm, 22mm,24mm * Length: 128mm * Quantity: 1pc Package Content: 1*Hex Socket Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight deviation by manual measurement for data.