Each purchase is ONE Piece - Quarter not includedThis knob will only fit Navigation that have a Chrome Knob, Located in the Top Left Corner ONLY. The Knob has no words.This is not a universal knob. Each Ford Navigation has a different style knob, they are not interchangeable.If your knob is not located specifically in the top-left CORNER or if you knob does contain words, then please don't buy.The knob may fit the following vehicles, but also must match the photo:The knob has a chrome trim and does NOT contain any wordsEDGE 2008 FORD ESCAPE 2008 FORD EXPLORER 2008 FORD F150 F250 F350 F450 2008 FORD EXPLORER SPORT TRAC 2008 FORD MUSTANG 2008 2009 FORD FUSION 2008 2009 Please see this photo.Notice the CHROME TrimIf your Navigation has a black or grey knob without chrome circle trim, then please do not buy. If your knob is not located in the TOP Corner, then please do not buy. We can sell any other FORD MERCURY LINCOLN knob, please contact us for a price quote.This listing is the REPLACEMENT KNOB ONLY. See picture for reference. If you are looking for the knob of a different radio, please message us.This listing is NOT for the Actual Navigation SystemThe knob is New condition - Never Used.OriginalOEM Plastic Knob. Non Retail Packaging.Shipping: USA Shipping Free, Worldwide shipping ask for quote.Any Questions?: Do not hesitate to click the "Ask a question" button.. see below.