Feature●【Fitment】Installed on electric drills, it can be used for home ceilings, kitchen cabinets, etc.Automatic transform the screw without holding, your hands.●【Adjustable Screw Length】The screw length can be adjusted. The screws of different lengths need to be adjusted by selecting the corresponding nozzle length rotation button.●【Chain Is Long Enough】The chain can hold 50 screws,enough for a long time work.Made of high-quality Stainless Steel material, rust-proof, strong and durable, and not easy to wear.●【Adjusting Screw Depth】Screw depth adjustment through turn up or down the wheel.Upward adjustment for shallower screw and downward for deeper screw.●【Quality Assurance】As a professional seller, we offer high quality products and thoughtful services. Each product must be strictly inspected to ensure reliable quality. Please rest assured to buy our products, I hope you have a pleasant shopping experience.●★ The screw length can be adjusted. Screws of different lengths should be adjusted by selecting the corresponding nozzle length rotate button.●1Description