Minleon's patented commercial-grade LED Replacement Bulbs are not only long-lasting and unbreakable, but also cool-to-the-touch and dimmable. With a thicker shell and absence of a ring, the retrofit C9-V2 is easily distinguishable from its predecessor, the V1. Plus, it's (c)UL listed and Prop 65 certified to have no components known to cause cancer by the state of California. Trust in the value and quality of Minleon V2 C9 Faceted LED Blue SMD Bulbs - Case of 500 Bulbs