The Al7075 ratchet body is a top-of-the-line product designed to fit securely and robustly onto your 11-speed, 30-tooth cassette mount. Made from high-grade aluminum, it offers superior strength and durability, ensuring a reliable and robust connection for your bike's rear hub. The 12mm thru axle allows for a smooth and efficient drivetrain, making it an excellent choice for both road and mountain biking. The freehub shell is black anodized, providing excellent visibility and protecting your drivetrain from corrosion and damage. With its adjustable ratchet tension and secure mounting system, this product is a must-have for any serious cyclist.