By using this product, you can adjust your watch band yourself. Great for pushing out pins from watch link and adjusting the band. A must-have tool for watchmaker or watch enthusiast. Watch band opener. Watch link pin remover. Bracelet strap adjuster. Size: 11.5 * 4.7 * 3cm. Instructions: 1. How to replace bit Remove handle and unscrew the pin bit. 2. How to size a watch band Place watch band flat across the platform. Use the platform scale to line up with bit pinhead. Connects to the band for easy removable. Package Included: 1 x Watch Band Adjuster.