Maybe we're just a bunch of old softies, but the GripNut told the world we meant business when it came to headsets, and there are still a kajillion of them out in the world, giving good, daily service. It's hard to talk about sustainability and not keeping making a cornerstone product like this one. You want to ride that classic bike of yours forever, and we don't blame you. Our GripNut(TM) headset is designed for threaded forks that don't require a cable hanger or additional spacers, allowing us to build a low stack height threaded headset with a unique collet locking system that stays securely adjusted. Every Chris King headset is built with our heat-treated bearings, and surgical-grade steel races machined simultaneously to ensure they are perfectly matched. As Chris King bearing tracks age and burnish, they actually get smoother, and all headsets are fully serviceable for years upon years of demanding riding. External upper and lower cups with the iconic, Chris King rounded profile adds timeless style to even the most modern bike. Specifications: - Engineered, manufactured and assembled in Portland, Oregon USA - King Lifetime Warranty - Legendary made-in-house bearings - GripNut(TM) proprietary collet retention system - Options for 1" or 1-1/8" straight steerer tubes