Drilled out wall hole and this inserted to allow cable runs through walls. Flexible and convenient. You could glue or caulk them in (small bead on the back of them, then push into wall) to ensure they stay put as the wires move. They have some grooves to help them stay put in the wall, but the cable may pull them out when adjusting. I like them a lot because the cable can be adjusted through them in the wall. The cable is not fixed or anchored down. Recommended!
Rating: [5 of 5 Stars!]