Chrome Plated Brass Window Anti-Rattle Window StopThis Anti-Rattle Window Stop reduces vibration and noise while underway. Threaded pin tightens on shank. Constructed of chrome plated sand cast brass. Installs with two #6 FH fasteners (not included).Features:. Sand Cast Brass Chrome Plated. Fastener #6 FH. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.