File boxes stack conveniently on a shelf or in Jagwire's file box organizer for easy access and come in a variety of different quality levels. Features: Linear strand construction provides stiffness while remaining suitably bendable Slick-Lube liner cuts friction and protects Teflon coated cables Lube is introduced continuously as housing is extruded so there are no dry spots in the middle of the housing run Specifications: Cable Type: Housing Only (Shift/Derailleur) Outer Diameter: 4mm Liner: Slick-Lube Color: Black