Size 11mm x0.30mmx 1250mm x 30mm Dia
Trifix Range of Clock Mainsprings Trifix have a very large stock of carbon steel and can provide many spring sizes which can be rarely needed. If you have such a special request, please let us know via the website online support facility and if it is available, we shall include it in the list below.ideal size for approximately 28mm barrel diameter
Made from quality steel & used by professional clockmakers. Many professional clockmakers replace a clocks mainspring not only when it breaks but as part of a complete service. A mainspring winder is advised as removal and fitting without one can cause damage or injury