12-inch long corrugated chrome socket, size 21mm, model 4302M21, designed for reaching deep and narrow spaces with strong performance and high precision in removal and installation. Made of high-quality chrome, resistant to rust and wear, to ensure durability for heavy use and long lifespan. Its deep socket design facilitates easy access to recessed bolts with excellent stability during use, making it suitable for maintenance and mechanical work in workshops and industrial fields.