blaze Top quality headsets for tapered head tubes and forks with tapered or standard 1.1/8” steerer tubes. Cups and top cover made of 2014 aluminium. Both threadless cups drilled for weight reduction. High quality precision sealed 45/45 bearings with anti-rust titanium coating. Custom compression cap included. Now they come with two steel crown races – for tapered or 1.1/8” forks. Designed to fit Shine, Wish, Two6Player, Phantom and Hornet frames. Stack height: 12.7+13.2=25.9mm. Weight: 126g / 4.44oz. (without top cap). Assembly dimensions: 34mm (upper) / 49,57mm (bottom).