Enhance your bike’s performance with this high-quality Pulley Wheel, designed for durability and smooth operation. Crafted from premium aluminum alloy, the main body is wear-resistant, anti-rust, and lightweight, ensuring long-lasting use without adding unnecessary weight. The steel bearing features high strength and a smooth finish, providing fast and sensitive responsiveness for efficient gear shifting and optimal riding experience. Key Features: · Durable Aluminum Alloy Construction: The solid casting and fine machining deliver exceptional strength and wear resistance, making this pulley wheel reliable for extended use. · High-Strength Steel Bearing: Ensures smooth rotation and quick response, enhancing overall drivetrain efficiency. · Versatile Compatibility: The 12T pulley wheel supports 9, 10, and 11-speed bikes, making it suitable for most modern bicycles. · Included Adapters: Comes with 4mm and 5mm adapters to fit various bike models, providing flexible installation options. · Lightweight Design: Weighing approximately 20g with a 50mm (2-inch) diameter, this pulley wheel adds minimal weight to your bike while maintaining strength and durability. Specifications: · Material: Aluminum Alloy · Diameter: 50mm / 2 inches · Weight: Approx. 20g Package Includes: · 1 x Pulley Wheel · 2 x Adapters (4mm and 5mm) Upgrade your bike’s drivetrain with this precision-engineered pulley wheel, combining robust materials and smooth performance to ensure reliable and efficient cycling on every ride.