- Swiss Made
- Generale Ressorts
- Generale Ressorts state that mainsprings are manufactured from inox steel
- Sizes: Height 1.05 x Thickness (Strength) x Length x Barrel Diameter
- If bridle type is not specified then it is a normal bridle
- Dimensions in millimetres (mm)
GR state that all GR mainsprings are supplied ready to use as they are already greased.