Steel Construction: Constructed from high strength alloy steel with multiple layer electroplated antirust coating, offering great wear resistance and protections for long terms in harsh job site conditions Standard 1 / 2 " Drive Compatibility: Features a standard 1 / 2inch square drive interfaces that works with electric wrenches, impacts, and manual wrenches, ensuring seamless compatibility across different power tools for construction and repair tasks Multipurpose Construction Tool: Ideal for dismantling water stop bolts, scaffold couplers, steel frames, and I beams, making it an essential professional tool for building and engineering projects to boosts work efficiency High Concentricity Structure: Precisions engineered with a secure rubber rings locking mechanism to wobbling and slipping during operations, ensuring even force distribution and reducing bolt damage while enhancing and efficiency Multiple Size Design: Includes 12mm, 14mm, and 16mm interchangeable socket heads to fit various water stop bolts and scaffold fittings, eliminating the need for multiple sockets and providing cost effective solution for dismantling needs, Manufacturer: Kaeltsyn