Details: * Forged from chrome molybdenum steel, high hardness, good toughness and long service life * Excellent material selection, strong impact resistance, general heat treatment, high hardness, corrosion resistance * Applicable to 1/2 inch square head wrench, head hexagon socket head, various specifications, can be used in various working environments Specification: Name: socket adapter Size: T20-T100 (optional) Length: 78 mm Square socket head size: 1/2 inch (12.5 mm) Color: black Quantity: 1PC Package content :1*socket adapter 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 manual measurement deviation for the data.