【Fitment】Behind Seat Speaker Brackets fit for Chevy C10 1973-1987. | 【Feature】Made of high-quality materials,16 gauge steel. excellent performance and durable.Easy to install, Direct installation with double-sided tape or bolts,there's no need to cut or modify your cab or doors! | 【Design】Square body,speaker brackets will fit 6"×9" Speakers and will allow you to easily install a pair of speakers behind your seats. | 【GOOD PERFORMANCE】Built to strict quality control standards. This is an easy way to add a lot of sound to your cab. It allows sound to travel along the sides of the seat, rather than being muffled by the seat. | 【Package】A Pair of Behind Seat Speaker Brackets.