- 5-stage adjustable design: This universal radiator key accommodates various valve sizes including 1/2 inch, 3/8 inch, 3/4 inch, and 1-1/4 inch. Its flexibility ensures compatibility with most radiator systems, making it an essential tool for any homeowner or professional. - Precision control with square socket: The integrated square socket offers a connection for a 1/2 inch ratchet drive, delivering enhanced torque and accuracy when turning radiator valves. This feature minimizes the risk of slipping or damaging the valve, ensuring effective operation. - Built to last: Crafted from high-quality materials, this step wrench is designed for durability and reliable performance in both residential and commercial environments. Its robust construction withstands heavy use, ensuring it remains a trusted tool over time. - Compact and user-friendly: The ergonomic design enhances grip and maneuverability, especially in tight spaces. Its compact size makes it portable, allowing for easy access in various situations. Use scenarios: 1. During seasonal radiator maintenance, easily adjust valves with precision to ensure optimal heating efficiency. 2. In plumbing repairs, swiftly access and turn different valve sizes without the hassle of multiple tools. 3. For DIY home improvement projects, this key simplifies radiator adjustments, enhancing your overall experience and results. This radiator key combines function, compatibility, and durability while providing the reliability that every user needs.