Watch movement balance wheel with hair spring, no error in size standard, precisely fit the watch movement.
Made of alloy material, durable and not easy to deform, can effectively resist oxidation and rust, and has a long service life.
Stored in a plastic storage box makes it difficult to damage, professional for watchmakers, watch repair shop, etc.
Professional tools for watchmakers and watch repairers, saving you expensive repair costs.
Perfect accessory parts to replace the old or broken watch movement balance wheel.