This two pack of quick-release snap clips for the Respironics FitLife will replace the original clips supplied with your mask if they get lost or broken. Having a broken clip can make it impossible to get and keep a good seal, so it's reassuring to know that they can be easily replaced with a -like-for-like substitute. The clips come in a pack of two. This clips will only fit the Philips Respironics FitLife Total Face Mask. It will not fit any other kind of mask.