Features: AUTOMATIC SCREW FEEDING -- The Automatic Nail Adapter with 50 screws which can fast, continuous and accurate feeding nails, easy to operate with one hand. ADJUSTABLE DEPTH AND LENGTH -- Screw length adjustable. For different length screws, the nozzle length should be selected. Depth length adjustable. Adjust screw up, shallower, adjust screw down, deeper. COST EFFECTIVE -- Various screws can be used. The Auto Feed Screwdriver Tape with 50 screws and all of them are replaceable, after use you can put new nails in. This auto feed adapter and chain can save both time and labour for you. UNIVERSAL FIT ADAPTER -- Adapter clamp from 41mm to 46mm which is suitable for nail or electric drill in the market. Great Household Electric Drill Woodworking Tool Power Drill Attachment. PRACTICAL WOODWORKING TOOL -- The Automatic Nail Adapter and Chain Set is a great tool for both household DIY use and professional woodworking to installation of ceiling, kitchen cabinets, etc. Specification: Material: + Stainless Steel Color: Black + Silver Adapter Clamp Size: 41-46mm Screw Quantity: 50pcs Chain Nail Adapter: 250 * 170 * 46.5mm/9.84 * 6.69 * 18.31in Chain (with screws): Screw Length 25mm Packing List: 1 * Chain Nail Adapter 1 * Chain (With 50 Screws)