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 for dismantling needs. Standard 1/2" Drive Compatibility: Features a standard 1/2inch square drive interfaces that works with electric wrenches, impacts guns, and manual wrenches, ensuring seamless compatibility across different power tools for construction and repair tasks. 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. 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. Package includes: 1 Set of 3 In 1 Multiple Size Socket Wrench Set