These are original replacement Magnetic Headgear Clips for AirFit & AirTouch N20, F20, F30 & F30i Series ResMed masks. These Magnetic Headgear Clips are used to attach the lower headgear straps to the full face cushion if you are using an AirFit or AirTouch Full Face Mask. If you are using an AirFit or AirTouch Nasal Mask, the headgear clips connect the lower headgear straps to the bottom of the frame. One pair of clips are included in each package. Although these Headgear Clips feature blue highlights, they are compatible with both the regular and the “For Her” style masks.