1REPLACEMENT PART: An excellent replacement for old or damaged watch balance wheels. Perfect for ETA 2892 series watch movements. 2EASY TO INSTALL: With a spring lever for easy upgrading, you can install this watch balance wheel onto your favorite watch in seconds with no additional tools required. 3BALANCE MOVEMENT: Watch balance wheel can help balance your watch movement with ease, which is perfect for professional watchmakers or professional jeweler. 4COMPATIBLE AND RELIABLE: Watch balance wheel is fully compatible with your watch and delivers high performance results, which a required component for any watch repairer. 5DURABLE MATERIAL: Made with excellent alloy material, this watch balance wheel is sturdy, durable, and can perform well. The exquisite craftsmanship and rich texture make it stylish.