【3-Piece Set】This impact bit-holder kit includes three conversions: ½" to ¼", ⅜" to ¼" and ¼" to ¼". It mates instantly with pneumatic and cordless impact drivers, letting you switch sockets on the fly and greatly boosting work speed. 【Quick-Change & Anti-Rust Coating】A retractable-spring socket delivers one-hand bit changes. The anti-rust coating plus embedded square drive ensure stable clamping, even force distribution and reduced wear, standing up to high-torque jobs. 【Pro-Grade Quality】Built for professional mechanics and home DIYers alike, these adapters give your impact wrench a stable, flexible interface—perfect for shop work or weekend projects. 【Multi-Scene Use】Ideal wherever rapid tool changes are needed—auto repair, construction sites, home DIY. The holders keep bits locked securely for a safe, efficient workflow and meet every fastening demand. 【Built to Last】Solid, one-piece construction provides rock-solid durability. The quick-release impact bit holders are practical accessories for any high-intensity task, helping you tackle tough jobs with ease., Manufacturer: LuLobtg