Durable and practical construction The headset base ring is made of material, durability and longlasting use. It is designed to withstand the demands of cycling and provide reliable performance. Compatibility and installation Compatible with a wide range of bicycles, this tapered fork open crown race replacement is suitable for both forks and headsets. It can be easily installed and integrated into various bike models. Material and performance Aluminum Alloy: Crafted from aluminum alloy, this base ring offers strength and resistance. It is lightweight yet sturdy, providing support and stability during cycling. Precise specifications Inner diameter 9 mm, outer diameter 46 mm, height 7 mm. This base ring is designed to fit seamlessly and securely in your bicycle's fork, ensuring proper alignment and functionality. Use scenarios Replacing worn crown races on tapered fork setups for road, mountain, or hybrid bikes to restore headset performance. Upgrading or retrofitting headsets across multiple bike models to maintain reliable compatibility and easy installation. Incorporating into builds or maintenance tasks where exact 9 mm ID, 46 mm OD, and 7 mm height ensure correct fit and alignment.