with the car audio A pillar modification high and mid range speaker mold. The 1.5 inch and 3.5 inch bracket base ring provides a solid support for your speakers, allowing for precise sound direction and improved audio clarity. This modification is for who demand the sound quality from their car's audio system. Features -Color:Black -Material:Plastic -Size:17.50X10.50X1.50cm/6.88X4.13X0.59in -Wide application: universal plastic speaker rings compatible with most car audio systems, offering broad applicability -Firm installation: flat speaker mounts and modification brackets provide a firm and reliable installation for your speakers -Userfriendly installation: easytofollow installation steps make these speaker mounts ideal for diy car audio upgrade -Robust construction: made from sturdy plastic, these speaker mounts are durable and resistant to warping, ensuring longevity -Sound enhancement: the design of the speaker brackets improves sound quality, enhancing your car audio experience Package list: 1 pair car audio base ring