Effortlessly remove bung, rusted, or stuck bolts in seconds with the hardened alloy steel construction and reverse spirals flutes that bites deeper, reducing slippage by 80% compared to standard sockets. Heat treated steel withstands high torques with anti rust coating, suitable with 1/4" and 3/8" driver for impacts tools and ratchets. Designed for mechanics tackling wheel locks, craft enthusiasts restoring rusted furniture, and marine engineers maintaining saltwater exposed machinery. Tackle stubborn bolts in confined engine bays, corroded tractors components, or salt sprayed marine equipment with thin walled extractors rotating 6 19mm. Organize 29 accuracy sized extractors in the labeled blow molded case for quick access during automotive repairs, industrial maintenance, or workshop projects.