Description:Cat® Switch Films are small pieces of plastic or other material such as rubber that go in between the top and bottom housing of a switch assembly to reduce switch wobble. The Films of the ignition starter switch has a gear that engages these teeth when it is powered, rapidly and briefly turning the flywheel, and thus the engine.Application:Cat® Ignition Switch Films are used in a wide variety of switch applications throughout Cat machines. Consult your owner's manual or contact your local Cat Dealer for more information.