C60-LAMP-ADPT3: Kohler coupler between LLLG-xxx or LLEDxxx-yI and C60-TUBE-xxx tube lens. Does not include iris

C60-EXT-F42: Female F42 threads used with C60-TUBE-C-RETAINER for repeatably removing/replacing parts without of set screws. (especially useful w/ C60-TUBE-B and TUBE-180L)