POLINI diagram disk Ø220mm graduated complete

Diagram disc for engine preparation, diagram calculations, ignition ... POLINI mark this disk is rigid aluminum machined mass, the fixing hole is already done, it has 2 markings graduation. Its diameter is 220mm, it is very precise and solid.

It comes with an adapter in M10 X 1.25mm, M12 X 1.25mm and M8 X 1mm, which means that it can be mounted on all engines!