Multiple Option: Includes 12mm / 14mm / 16mm size option to precisely fit different three stage water stop bolts, making it ideal for scaffolding, steel frames, and other construction fasteners requiring versatile disassembly solution High Strength Alloy Steel: Built from tough alloy steel with multilayer electroplated antirust coating, offering rust resistance against and harsh environment Standard 1 / 2 " Drive Interfaces: Compatible for electric wrenches, shock tool, and manual ratchets thanks to its 1 / 2 " drive interfaces, eliminating the need for adapters and maximizing tool versatility on job site Multiple Scenario Application: Perfect for dismantling three stage water stop bolts, scaffolding clamps, steel frames, and I beam brackets in construction projects, enhancing efficiency in maintenance and engineering tasks Durability Construction: With high concentricity processing and rubber rings fastening structure for stable operate during water stop bolt removal, tool damage threads while ensuring efficient disassembly, Manufacturer: HDOYTXXM