Item details: * Made of high quality material, durable and practical to use. *Application: Used to mount on the hexagon tool in installing air screwdriver, electric screwdriver, air drill, pistol drill electric drill, hand screwdriver etc. * It can transform the original hexagonal shape into a square head size, so it can be used to assemble the sleeve, kt oacute;ry is a good conversion add-on. * Material: Chrome Vanadium Steel Stainless * Color: Black (As Pictures Show) * Shank: 1/4 inch (6.35mm) * Size(Approx.): 25mm, 30mm, 50mm, 65mm * Quantity: 1/4pcs Content Packaging: 1/4pcs * Socket Adapter Note: 1. The real color of the item may be slightly different from the website images caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.