These PinHole Protectors are custom fit for your Revenge from Mars pinball machine.
 
Made of 1mm stainless steel, is very thin but very strong, protects the
slingshots plastics without adding to much extra thickness.

Made to protect and to be discreet.
 
They are custom designed for each game and are easily installed with a perfect and secure fit using the existing machine hardware. No additional holes are needed.