Square socket wrench · Radiator bleed key · Bleeding key · Plumbing wrench · Square socket keys · Air plumbing key · Bleed wrench Key benefits Compact, easy to store and carry so you always have the right tool on site or at home Designed for quick, reliable radiator bleeding to remove trapped air and restore heating performance Professional, practical design that is simple to use while providing durable, longlasting service What this tool does Opens and turns radiator bleed valves and square socket fittings to release trapped air from heating systems Helps eliminate noisy or uneven heating and reduces the need for repeat service visits Serves both heating technicians and general plumbers as a basic, musthave tool for maintenance and repairs Important attributes Function: radiator bleeding and squaresocket turning for heating and plumbing tasks Compatibility: works with square bleed valves and standard radiator valve fittings Size and portability: compact form factor for easy storage in a toolbox, service bag, or vehicle Material and durability: made from material chosen to ensure durability and practical everyday use Performance: professional construction for reliable torque and repeatable operation How it solves common problems Quickly vents air pockets that cause cold spots, banging noises, and inefficient heating Minimizes downtime by providing a simple, effective way to perform on‑the‑spot maintenance Reduces the chance of stripping valve fittings with a correctfitting square socket design Use scenarios Homeowner: Seasonal heating check — use the bleed key to release air from radiators before cold weather to restore even heat distribution Heating technician: Routine maintenance — carry on service calls to quickly vent systems and confirm balanced heating Plumber or installer: Commissioning or — use during installation or troubleshooting to remove air and verify proper flow Why professionals choose this tool Practical, compact design tailored to radiator and plumbing work Durable construction that withstands regular use Straightforward operation that speeds routine maintenance and repairs Includes: versatile square socket bleed key suitable for radiator valves and related plumbing applications.