1.Applicability:19mm for 15mm-18mm 2.ADJUSTABLE WIDTH: This wrench enables you to widen by turning left or narrow them by turning right, providing precise adjustments to suit door types and hinge setups. 3.CONSTRUCTION: Made from high-quality steel, the Wrench is built to last. Its construction can withstand regular use without bending or breaking, ensuring long-term reliability. 4 FOR SPECIFIC HINGES: Specifically designed for use with fire doors, cleanroom doors, and security doors equipped with flag hinges. It ensures proper alignment and functionality of these door types. 5.EASY OPERATION: The ergonomic design and simple operation make adjusting door hinges straightforward, even in tight spaces or challenging installations. NOTES 1.Verify compatibility with hinges before use. 2.Exercise caution to prevent injury or damage during hinge adjustments. 3.Due to different factory batches, the color difference and appearance may be slightly different, which will not affect the use Colour:silver Material:steel Size:Length .21cm / 8.3in Package Contents: 1 x Hinges Adjusting Wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.