The Specialized Derailleur Hanger Road Thru-Axle 2.0 Bolt-On Rear Derailleur Hanger is a precision-engineered replacement component designed for road and active model bikes equipped with thru-axle dropouts. Constructed from durable alloy, this critical component serves as the essential link between frame and rear derailleur, ensuring accurate shifting performance and dependable drivetrain operation across demanding rides and varied terrain. Each single pack includes one replacement hanger and a complete M5 x 0.8P x 9mm mounting bolt for secure, reliable bolt-on installation. Key Features Precision-Machined Alloy Construction: Ensures alignment accuracy and consistent shifting performance Complete Installation Hardware: Includes M5 x 0.8P x 9mm mounting bolt for secure, reliable fit