Maintenance Tool: perfect for closing rebound boxes. The Closing Mainspring Tool is a professional repair tool commonly used when repairing or replacing the mainspring. The closing tool is a good helper for the watchmaker. EASY TO OPERATE: The bellows closing tool is made of high-quality materials, eco-friendly, ergonomically designed for a long service life. When you need to service your watch, the bellows closure tool can help you a lot. Versatile: The tool to close the mainspring case is approximately 2.6cm/1inch in diameter and approximately 2.6cm/1inch in height. The closing mainspring tool is versatile and professional. Closing tools are mainly used for watch repairs, clockwork tools, clockwork repair tools and watch repairs. Easy to carry: close the main spring box tool can be divided into two parts, small size, easy to carry, easy to operate and store, light weight, save time and effort, not increase your workload, good performance, can bring you a lot of convenience . Safe to use: The tool is and not easily deformed. You can use the tool safely. quality control and quality assurance, high safety factor, even if you use the tool many times, closing the mainspring tool not affect your work. You can buy and use tools safely. Colour:black Material:plastic Package Contents: 1 x watch repair Only the above package content, other products are not included. Note: Light 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.