Here it is, the Ninja Pinball. 

Considered the shiniest and most finely polished pinball in the world, the Ninja is a solid chrome standard size/weight pinball that has been hardened and shined to an unprecedented mirror finish. The Ninja ball is not only the shiniest but will last longer before going dull than any other ball. 

Give your machine the best. Give it ninja pinballs. 

Please note - games with high level use of magnets (Lord Of The Rings, Dialed In, Addams Family etc) will cause the ninja pinball to magnetize. Consider using the Polaris pinball in games with a lot of magnet use.