Manufactured in lens quality polycarbonate, Carclo TIR optics have much higher temperature resistance than acrylic optics and carry a UL rating. These one piece optics are tough and impact resistant but precautions should be taken to prevent them from coming in to contact with organic solvents or vapor. The Carclo 26.5mm secondary optics are designed to throw light in several specific illumination patterns. The size and shape of each lens allow them to clip into a plastic holder. The holders are shaped to easily integrate with the 1-Up Star LEDs. The following 26.5mm Carclo Optics fit the 1-Up: Rhea Star, Indus Star and Endor Star LEDs.