Pinball

The standard pinball used in pinball games made from polished stainless steel with a diameter of 1 1/16" and a weight of 80 grams.

Some games incorporate additional non-standard pinball for special modes. Examples of this include the "Powerball" from Williams Twilight Zone (1993) made from a form of ceramic and weighing 65 grams. (Source: Marco Pinball)