Mad Bull Has Made The Most "Colorful" Spring Which Is More Beautiful Than Anyone Else. (So Is The Performance).
(The color is not painted. It is hard-coated by a Special process.)
Calculated carefully by computer and test by 100,000 times punching.
Mad Bull spring has been proofed that the length and force are still consistent.

Mad Bull just want to proof that their spring is not just a "spring". It is a MadBull spring and it is "colorful."

Other features:
* Consistent 100,000 shots!
* Non-liner design (calculated)
* Color coating to reduce effects from environment
* Design & Made by experienced engineers.
* Premium quality German piano wire