These rings are made from 6" Schedule 40 PVC and have a 1/4 inch wall thickness. They are used inside a Schedule 40 PVC fitting to give you a solid surface to mount your speakers in with screws.. Without rings you'll have a difficult time trying to secure your speakers in the end of a fitting.
Typically you'll need one ring per speaker so just modify the quantity in cart for the number of rings you need!
*NOTE* These rings are the same diameter as schedule 40 PVC pipe. This means these rings will not fit INSIDE of a straight section of PVC pipe.. These rings are intended to be used in conjunction with a PVC Elbow, Wye, Tee or Coupling!
For a detailed explanation of where these rings are used see our video HERE