The Jagwire Road Pro - Slick braking cable is an inner cable for road bikes. These inner cables are polished for better performance. The polishing process leads to a smoother surface than that of e.g. PTFE coated cables. Due to the lack of coating these inner cables are more durable and compatible with outer cables from a different manufacturer. The Jagwire Road Pro - Slick inner cables are mainly used for high-end road bikes.