Features: *Construction: The 4-12mm Firmer Screw Tap Socket Adapter is crafted from high-quality alloy steel, providing exceptional hardness and resistance to wear for long-lasting performance. *Enhanced Grip: Featuring a square hole with an inlaid clamp pad in the leather for ring, this adapter ensures a secure fit, minimizing slippage during operation for improved efficiency. *Versatile Usage: This tool is compatible with hand electric drills, making it suitable for a variety of applications including model manufacturing, DIY projects, auto repairs, and professional machine maintenance. *Convenient Compatibility: Designed with a 1/4 inch hex shank, this extension bar easily attaches to most drill chucks, allowing for quick and hassle-free tool changes. *Increased Reach: The extension bar design provides added length, enabling access to hard-to-reach areas, making it an essential addition to any toolkit for comprehensive task completion. Specifications: *Product Name: Screw Tap Socket Adapter Set *Material: 45# steel *Size:(Approx.) 50mm/1.96'' *Color:Black *Shank: 1/4 Inch Hex Shank *Types: M-4,M5,M6, M8, M10, for M12 *Suitable for: model manufacturing, DIY projects, auto repairs, and professional machine maintenance. *Quantity: 6pcs Package Content: 6*Screw Tap Socket Adapter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.