Cleerline Fiber Optic Cleaning Swabs effectively remove light oil, dust and other contaminants without damaging fragile optical lenses and plastic housings. Plus, their non-abrasive, lint-free construction won't leave behind debris during the cleaning process. Also known as cleaning sticks, Fiber Optic Cleaning Swabs clean connector and port end-faces by inserting a properly sized, slightly dampened swab, rotating it and following it with a dry swab. They are designed for single use and are specific to 2.5mm ferrule size. Swabs are commonly used inside fiber bulkheads, adapters and receptacles. Cleerline Fiber Optic Cleaning Swabs include 50 swabs per package.