Use to add aftermarket speakers to factory door location. Water resistant- Sturdy plastic. Includes 2 pair for 4 doors- 4 speaker plates and 4 speaker wire harness. Fits most 6 and 6.5 inch speakers- Speaker plate dimensions- depth- approximately 5/8th of an inch, width diameter- approximately 5"- 5.5" with inner tabs removed - can be trimmed out to fit up to about 5 1/2" speaker diameter. Not all speakers have the same dimensions- some speakers will require cutting and trimming the spacer. Compatible Vehicles: Made For 2003-2009 Pontiac Vibe and 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Toyota Matrix