After 6 months try and error, we finally made the most "colorful" spring which is more beautiful than anyone else. (So does the performance)
(The color is not painted. It is hard-coated by special process.)
Calculated carefully by computer and test by 100000 times punching.
Our spring has been proofed that the length and force are still consistent. (
See here)
We just want to proof that our spring is not just a "spring". It is a MadBull spring and it is "colorful."
Other features:* Consistent >100000 shotsl
* Non-liner design (calculated)
* Color coating to reduce effects from environment
* Design & Made by experienced engineers.
* Premium quality German piano wire
