1Fitment: Mechanical watch clockwork spring is associated with the mainspring of the 430P movement, allowing for a smoother, tighter mainspring. 2Excellent Alloy: Watch clockwork spring made of alloy material with high accuracy, wear and impact resistance, no deformation, strong and durable. 3Usage: Watch clockwork spring replacement is mainly used for replacing or repairing aged or damaged mainspring, easy to install and use. 4Watch Repairing: Watch movement mainspring is a professional watch repair accessory for watch repair stores, which has no scratches to the watch. 5Fine Workmanship: Mechanical watch movement mainspring is small and compact for easy to carry, with exquisite workmanship for durable use.
