'Get out the cable stretcher!' This is a mildly humorous prank to play on a greenhorn cable installer, but sometimes, don't you wish you actually had one? Fiber couplers (sometimes called adapters) are a simple and stable way of extending your fiber optic cable, or creating a service point at a patch panel. These are also great for coupling your bulk fiber installation cable to a patch cable which will increase the longevity of the install cable. Simplex SC to Simplex SC Single Mode (OS2) Compatible 13mm Panel Mount High Precision Ceramic Sleeve Stainless Steel Clip For UPC Polish Type Cables Low Insertion Loss ?0.2dB Rated for 1000 Plug Cycles