Metra 82-3002 GM Full Size P/U SUV Speaker Adaptors 1995-2005 Designed specifically GM Full-Size Trucks and SUVs 1995-2013,Chevy Cobalt 2005-2006,Captiva Sport 2012-2015 Adapts 5 1/4 or 6 1/2 speaker to front door location Made from polypropylene