Description No More Burning Fingers and Hands! Just Listen for the Whistle to Find the TDC Compression Stroke. The Whistle Alert (Flexible) performs the same job as the rigid version but can be placed in hard-to-reach places where the rigid version would be difficult or impossible to place. It screws into a spark plug hole to quickly indicate compression stroke. Features and Benefits: Eliminates the need for an extra hand Can be used in hard-to-reach places After installation, your hands are free to complete the job Excellent for use on deep, recessed spark plug threads Rigid model also available (#7882) WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
