This is a simple tool that can be adjusted by the most common type of watch lock. You can easily adjust the band by yourself. You will be happy to use it over and over again. Use for adjusting or adjusting the strap of your watch. (Product Specifications) Set Contents: 3 pin removal rods for watch bands and belts (approx. 2.0 inches (51 mm) x 3, band fixing base *If it is hard, we recommend that you stop working and ask a specialist store. Any excessive operation may cause damage to the tools, damage to the watch, or scratches.