Exquisite aluminum alloy material, sturdy and , not perishable candle. Installed on electric drill, suitable for gypsum board, partition wall, wood board, ceiling, etc. Adjustable screw length and depth, easy to use and good performance. Automatic nail feeding, no need to support fast, continuous and accurate nail feeding, simple operation, no nails falling. Complete tools, you can operate it yourself, suitable for DIY enthusiasts, Manufacturer: Akfldms