Description: Material: It is made of high hardness steel, which is durable and prevents rust. Easy Installation: This bit nut driver bit is designed to quickly and effectively tighten or loosen wing nuts, bolts, hooks when installing blinds/panels or performing other projects, and save a lot of time and change Finish the job quickly. Brain hole wide open: All the extractors are precisely designed to hold tight and not loose your hands. The provides excellent . The more you turn, the tighter the sleeve is held, which saves you time and quickly installs you. Easy to Use: Put the Butterfly Nut driver into an electric screwdriver to install the Butterfly Nut/. There is no need to worry about using other hardware tools to sprain your thumb and reduce finger wear. Wide use: It can be used in 8mm hexagon nut drive and is very suitable for installing anti blinds or other items. It can quickly and effectively fasten or loosen wing nuts, bolts, C shaped hooks, Q shaped hooks, and eye hooks. Size Chart: Length: 8cm/3.15inch Package Includes: 1 Wing Nuts Driver(2 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.