I bought these for a desk I made in my wife's workshop so we could run cables through it instead of leaving it a place. They fit as advertised, open and close smoothly, and generally do what they promise. The reason I give 4 stars instead of 5 is because they don't have a rubber grommet around them to prevent them from slipping out of the holes when you pull the line or pull a new line through, so you'll have to reset them every time.