I bought the NAVAC NX1V manifold gauge set and within a week or so of owning it one of the snap clips that keep the case closed broke. I took it back to the place it bought it and they got NAVAC to replace the clip. That clip lasted about a month and it broke again. At that point I decided to try and design my own clip and make it stronger than the one that came with case. I think I have done that, it may not be perfect but it works. I just used the metal pins that came with the original clips. If you have lost them I'm sure you can find something that will work. Hope it helps