High Quality: It is made of high hardness chrome molybdenum steel + nickel-plated surface, which is durable and prevents rust. Easy Installation: A set of 2 pieces: This screwdriver bit is designed to quickly and efficiently tighten or loosen nuts, bolts, hooks when installing hurri blinds/panels or other projects, and save a lot of time and change jobs quickly. Brain hole Wide Open: All bolt extractors are precisely designed to hold tight and not lose your hands. Internal threading provides excellent torque. The more you turn, the tighter the sleeve, saving you time and installing quickly. things. [Wide Use] It can be used with 12mm, 18mm hex nuts and is very suitable for installing hurricane shades or other items. It can quickly and efficiently fasten or loosen wing nuts, bolts, C-hooks, Q-hooks and eye hooks. Dimensions: 2 pieces with 6 hex handle .35mm, drive bolt and nut extractor are equipped with (12mm), (18mm), 4 slots of size 5mm, 8.2mm. Can meet the size you want.