Universal Endoscope Optical CouplerUniversal Endoscope C Mount Coupler acts as a connection between the endoscope eyepiece and the camera body. Two types of C mount Couplers are available: the Olympus Coupler that connects to a screw on Olympus eyepiece and the regular clip on Universal Coupler that snaps onto any of the 32mm endoscope eyepieces. Both couplers have a C mount thread on one end and an eyepiece attachment on the other. These optical adaptors feature integrated focusable