The Shimano SM-EW90 Hook is a versatile and reliable component designed to enhance your cycling experience. Weighing just 5 grams, this lightweight hook is crafted with precision engineering to ensure durability and performance. The SM-EW90 Hook features a sleek design that seamlessly integrates with your bike's electronic shifting system, providing a secure and convenient mounting solution. With its high-quality construction and compatibility with Shimano Di2 systems, this hook is a must-have accessory for any cyclist looking to streamline their setup. Upgrade your ride with the Shimano SM-EW90 Hook and enjoy the benefits of a well-organized and efficient electronic shifting system.