SECURELY MOUNTS SHIMANO DI2 JUNCTION BOX: Eliminate the need for bulky rubber bands or zip ties by using this sleek and secure junction box mount. Designed to fit perfectly under your stem, providing a clean and streamlined look for your bike. PERFECT FIT: The long mount for stems over 100mm ensures the perfect fit for your bike setup without compromising performance or aesthetics. COMPATIBLE WITH SHIMANO DI2 SYSTEMS ONLY: Specifically designed to work seamlessly with Shimano Di2 electronic shifting systems, making it the ideal accessory for cyclists who want to enhance their Di2 setup without hassle. LIGHTWEIGHT AND DURABLE CONSTRUCTION: Weighing just 6.6 grams and made from bendable stainless steel with a black oxide finish, this mount is engineered for both durability and minimal weight impact, while providing a precise and secure fit on standard 1 1/8” steerer tubes. MADE IN THE USA WITH PRECISE ENGINEERING: Crafted with attention to detail in the USA, this mount is thin enough (0.9mm) not to alter your stack height, while offering exceptional stability and a high-quality finish for long-lasting performance.