•【Wide Application】Suitable for fire doors, clean room doors, security doors, safes, and other high-temperature quenched installations. •【Durable Construction】Made from high-quality steel with high hardness for wear resistance and long service life. •【Ergonomic Design】Smooth handle with ergonomic design for comfortable grip and effortless operation. •【Adjustable Range】Capable of adjusting flag-type hinges within a range of 8-19mm. •【Specialized Tool】Designed specifically for flag-type hinges, enhancing installation precision and efficiency. Specifications: •Material: Steel •Adjustment Range: 8-19mm •Compatible Hinges: Flag-type hinges •Not Suitable For: Hinges with connection points exceeding 5mm Package included: •1 x Door Gap Adjustment Wrench