The Shimano SM-GM02 Grommet is specifically designed for internally routing EW-SD50 E-tube wires, ensuring a clean and professional setup for your Di2 electronic shifting system. These grommets are tailored for oval 7x8mm frame holes. Neat and Secure Cable Routing: The SM-GM02 grommet ensures a snug fit for EW-SD50 wires in your frame’s internal routing ports. It prevents wires from moving or rattling, maintaining a sleek and quiet ride while protecting the wires from wear. Compatible with 7x8mm Oval Holes: Designed for frames with 7x8mm oval holes, these grommets provide seamless integration with your bike’s design. Their precise fit ensures stability and enhances the aesthetic of your Di2 setup. Essential for Di2 Systems: As part of the Shimano Ultegra Di2 system, the SM-GM02 grommets are crucial for clean and reliable wire management. They are compatible with Shimano’s E-Tube SD50 wires, ensuring hassle-free installation and optimal functionality. Durable and Reliable Design: Made from high-quality materials, these grommets are built to last. They offer robust protection for internal wires, ensuring long-term reliability and performance under various riding conditions. The SM-GM02 grommets are simple to install, making them an ideal choice for both professional mechanics and cycling enthusiasts. They come in a 4-piece kit, providing everything needed for a complete setup.