Swarovski 2078 Rhinestones HotFix SS16 are set using heat such as a Kandi Professional Touch Hotfix Applicator or can be used to make your own iron on transfers with mylar sheets. Swarovski 2078 Hot fix Flatback Rhinestones are a hot seller. Swarovski 2078 Hot Fix Flatback Rhinestones are sometimes also referred to as XIRIUS Rose. Swarovski 2078 XIRIUS Rose HotFix shown here is Tanzanite Shimmer SS16.