Lot of over 160 Delco mylar dome tweeters manufactured by Onkyo for use in mid-1990s GM cars with premium sound. Fits many models from Buick, Pontiac, Oldsmobile and Chevrolet including Grand Am, Alero, Lesabre and more. They sound very nice and can easily be retrofitted into many different vehicles, or even home audio speakers. They do not come with a built in crossover so you will need to use a capacitor or existing passive crossover if adding to a component system. I used a 4.7uf capacitor and they worked very well, go with a lower value capacitor for higher cutoff and higher power handling. These will fit into many different cars' tweeter pods and sound very nice. You may have to glue them in place as they are press fitted into their original application.