The Shimano SM-GM01 Grommet is an essential component for clean and secure internal routing of the EW-SD50 Di2 power cables. Designed for frames with circular 6mm holes, this grommet ensures optimal cable protection and a professional finish for electronic shifting systems. Precise Fit for 6mm Frame Holes: The SM-GM01 is tailored for circular frame holes with a 6mm diameter, providing a snug fit for EW-SD50 cables. This ensures stability and prevents unwanted movement or wear during rides. Clean and Professional Cable Management: These grommets help maintain a tidy and aerodynamic frame setup by securely routing Di2 cables internally. They prevent cables from rattling or rubbing against the frame, enhancing both aesthetics and functionality. Durable and Reliable Design: Constructed from high-quality rubber, the SM-GM01 grommets offer robust protection for Di2 cables. Their durable design ensures long-term performance, even under demanding conditions. Easy Installation: The SM-GM01 provides enough grommets for a complete internal routing setup. Their simple design makes them easy to install, suitable for both professionals and DIY enthusiasts. Specifically designed for Shimano's EW-SD50 E-Tube cables, these grommets are a critical accessory for maintaining the integrity and performance of your Di2 electronic shifting system.