Price is waaay less than any box store. Do not over tighten as everything is plastic we’re as the box stores have a metal ring around the screw hole area. See picture below.

They fit perfectly within the decora flexible wall plates and seem sturdy enough. So far they have not faded. They hold the keystone jack tightly so there is no movement or wobble as I've had with other keystone mounts.

Hope it will works

Always by these from here! Good quality and good price

Work well clean look

Fits keystones