DS18 DSFR6 6.5" Car Door Speaker Foam Ring Blocker Soundproof Spong Stereo Foam (Sold in Pair)

These are sized correctly for a 6.5" woofer. Installed correctly the the ring will improve the sound from the front of the speaker, and the disk will reduce sound reflections from the door panel. The material has the same medium density style foam as other acoustic products I have purchase over the years. The adhesive backing is made by 3M, which makes the some of the best adhesives on the market. Compared to other fast rings, the price is reasonable. The product specifications don't list the actual measurements. See the photos uploaded with this review for pictures with a tape measure. Ring thickness is 1". Inner diameter is 5.75" and outer diameter is 7.75" Overall, it's a solid product.

Not much to say, It does what it is intended to be used for. Great quality and easy to use and cut to fit application.

Can't beat the sound the these put out. Highly recommend