Suitable for straight front forks with upper 6 mm and lower 30 mm dimensions, providing a precise fit for your bike setup. Double bearings structure with sealed bearings for smooth and flexible rotation, improving riding feel and reliability. aluminum alloy construction delivers strong, durable performance while remaining lightweight. CNC processing and anodizing treatment deliver precision and an attractive finish, available in black, silver, and blue. Use scenario: ideal when upgrading an older bike or replacing a worn headset on a bike with straight forks that match the 6 mm upper and 30 mm lower dimensions, restoring precise steering. Use scenario: suitable for performanceoriented builds on bikes requiring a lightweight, rigid headset with durable bearings, improving rotation smoothness during climbs and descents. Use scenario: reliable option for daily commuting or recreational riding on bikes with straight forks that meet the specified dimensions, offering consistent operation and a visually appealing finish.