It is useful for small and medium production of springs for bangles and every kind of closure.
It is a simple tooling that lets you produce quickly, changing few spare parts, springs of different diameter in harmonic steel round wire of different section.
WHERE TO USE IT
When you have decided the right spare parts, it is enough to put the iron wire inside the apposite guide for a well-known length, turn the handle and then cut the resulting spring.
No particular maintenance needed.