➥ steel which is anti-impact , anti-corrosive and tough , a commonly used in hardware ➥ and thus can be firmly fixed on screwdrivers and suck the screws easily upon using it ➥ Exquisite workmanship , each edge can be accurately locked screws , no damage to the screw , and the screwdriver head , surface is plated chromium , which offers a smooth and brilliant surface ➥ 10 different sizes to meet your varied requirements ➥ Can be used for manual or electric screwdriver , electric drills , air drills and other tools, Manufacturer: Watreketal