T Tulead 4.72"x2.68" Speaker Port Tubes ABS Speaker Cabinet Port Tube Black Bass Air Ports 2-Inch Installation Diameter Pack of 4

Works fine, the center ring thing that looks like a bullseye (that isn’t necessary) snapped out of two of the four. Very thin and brittle in general- but did the trick- there’s no screw or flat mounting surface so a perfect insert hole and epoxy are necessary, if you have over 1000 watts, basically anything over a single 10 inch you need something stronger

Tiny ports read specs before you buy I thought they looked huge I did not read the specifications these are about 4 inches long and maybe an inch and a half and diameter they’re not very big

Used to create a set of bass ports on the helm of a sea ray boat, good value and worked well.

Good strong material definitely worth the money

It was the right size i needed but the length was not good enough for my application but it was ok though