• Swiss Made
• Generale Ressorts
• Sizes: Height x Thickness (Strength) x Length x Barrel Diameter
• Dimensions in millimetres (mm)

Generale Ressorts state that all GR mainsprings are supplied ready to use as they are already greased.

Generale Ressorts state that mainsprings are manufactured from inox steel

Generale Ressorts state mainsprings can sometimes be wound too tight or not tight enough in the metal ring, however, using a watch mainspring winder to fit a mainspring into a barrel will solve this. It is the length of the mainspring that is the important measurement for size fitting.

We hope that this information is helpful.