Easy-to-use pen style cleaners for most fiber optic cables - just push to clean. Works with virtually all common fiber optic sizes and connector types, allowing you to clean connectors and ports for the best possible optical performance. Just push to effortlessly clean fiber ends. Available in two sizes with color-coded tips for easy ID. Single push cleans with ease Unique two-position cap cleans ports and connectors with the same device Silk thread provides over 900 cleanings and advances automatically after each use for particle-free connections Under 9 (225mm) in length and weighs only 2oz. Blue tip = 1.25mm size for LC & MU connectors.