Solution: This set includes a versatile 4-way key and a multifunctional water utility key with square, triangular, and circular shapes. Each design addresses various needs, providing a practical solution for common water line issues. Superior Quality and Durability: Made from high-quality alloy steel, this wrench delivers robust and long-lasting performance. The heavy-duty construction resists deformation under extreme force. A nickel-plated finish enhances durability and provides excellent corrosion resistance for extended use. Compact and Portable: The efficiently designed 4-in-1 key set is small, lightweight, and easy to carry. It can be conveniently stored in your pocket, tool kit, or vehicle for quick access during emergencies. Versatile Usage: This water utility key works with a wide range of valve systems, including water, gas, radiator, electric, train, cabinet, and elevator valves. It serves as a compact, all-in-one tool for most valve operation tasks. Compatibility Notice: The dimensions of the 4-way key set are clearly specified. Please verify that these dimensions match your intended applications before purchasing to ensure proper fit and function. Color: Black & Silver Material: Chrome vanadium steel Package Contents: 1 x 4-way sillcock key (silvery) 1 x water utility key (black) Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.