Does anyone know what kind of PEX stabilizer is shown in the attached photo. My PEX tubing has a very slow leak and I can't tell what the metal things are on the side of the stabilizer. Is it a nail that has nicked the tubing or a clamp that is part of the stabilizer. A photo of the hot water line that is not leaking is shown for reference. The PEX tubing is running up through the floor from the basement to the 1st floor bathroom.