DetailsDetails Auto Part Position Front Outside Item Dimensions LxWxH 21.65 x 12.21 x 14.96 inches Material Aluminum, Glass, Acrylonitrile Butadiene Styrene (ABS) Vehicle Service Type Pickup Truck Vehicle Fitment 2003-2006 Chevy Silverado Pickup all models 2003-2006 GMC Sierra Pickup all models 2003-2006 Chevy Tahoe 2003-2006 Chevy Suburban 2003-2006 Chevy Avalanche 2003-2006 GMC Yukon / Yukon XL 2003-2006 Cadillac Escalade all models 2007 Chevy Silverado Classic Models 2007 GMC Sierra Classic Models (Note: Trailer tow mirrors will work for compatible vehicles with listed functions only. If your vehicle does not have those functions, these mirrors may not function well.) Mirrors Adjustment The power-adjustable flat mirror and manually adjustable convex lens enable you to flexibly adjust the rear view and get a suitable picture of your vehicle's surroundings. Aluminum Triangle Base The towing mirrors can stably be installed on your vehicle as they adopt classic triangle construction, durable aluminum base and pre-installed studs. Plug and Play Installation Remove the plastic plate with a screwdriver Remove screws that fix the door Install new towing mirrors and connect it to the power cord Screw the door and fix the plastic plate again