C60-30CRM-10LM: Male 38mm RING to 30mm Cage with provision for 10mm glue-in lens mount. 56mm O.D.

C60-EXT-10-2: Extension tube with 2mm lateral offset of ports, 10mm long w/ male to female C60-RING mounts. Typically used between TIRF condensing lens and objective (to better use the center of collimating and TIRF lenses)