This is it: The Polaris Anti-Magnetic Pinball, when the magnetic features in your machines demand a different ball. Polaris carbon pinballs, no matter how much they are professionally polished, do not have the ultra shine of the more expensive Ninja pinball and will have more of a satin finish. The weight and roundness are exactly on spec for a pinball. Carbon balls are also softer in nature than chrome balls and will scratch faster than chrome. Please take this into consideration if you have become used to the look of the Ninja or standard chrome ball because carbon, having a different molecular structure, won't measure up to our Ninja balls in appearance but will give you much longer lasting play in a machine with magnets.