Shimano FH-6500 is a high-quality freehub designed for smooth and efficient shifting. It is compatible with 9-speed cassettes and comes in various spoke hole options (28/32/36) to fit different wheel sizes. The FH-6500 utilizes HG sprockets and requires a specific lock ring (11 or 12 teeth) depending on the sprocket tooth configuration. It offers precise gear alignment and secure sprocket mounting, enhancing your overall riding experience.