Pinion Gears for Atomic Pinball Game. 6mm diam. x 2mm shaft diam. x 5mm width, Modulus : 0.5 (10 tooth) 8 pack. Fix your own game! If your Atomic Pinball Game makes a whining noise, but doesn't play, it is probably the pinion gear that is worn or broken. Obviously, I can't guarantee that this is your games problem. These gears may also fit other vintage motorized toys. Check the size of your old gear before buying. Condition is New. Ships with USPS Ground  Advantage Postage.