The included Shimano SG-7C21 cassette mounting ring is an essential component for securely attaching the cassette to your bike. Manufactured by the internationally renowned brand Shimano, this product combines quality and durability. The mounting ring ensures a secure and reliable hold of the cassette, allowing for smooth power transfer during your rides. It is compatible with various bike models and brands, making it particularly suitable for users of the Shimano SG-7C21 cassette joint. This mounting ring is robustly and reliably constructed, capable of withstanding even the most demanding cycling conditions. It is made from durable materials that ensure a long lifespan and optimal performance over time. Installing this mounting ring is straightforward and does not require any special technical skills. It easily adapts to your bike and can be quickly secured in place, allowing you to get back on the road in no time. Whether you are an enthusiastic hobby cyclist or an experienced professional, this Shimano SG-7C21 cassette sealing mounting ring is an important accessory to keep your cassette in place and ensure smooth drivetrain operation. Don’t let a low-quality component ruin your cycling experience; choose the reliability and performance of the Shimano brand.