Description: 100% brand new and high quality. Sealed cartridge bearings. Made from iron and aluminum material,super strength and anti-corrosion. Compatible with threadless 1 1/8" (28.6mm) steerer tubes. Delicate appearance,sturdy and durable. Specification: Material: Iron and Aluminum Stack Height: 47mm Size: 1-1/8",28.6mm Head Stem-Build: external Cartridge Bearing Diameter: 34/28.6-34/30(mm) Package Includes: 1 Piece Bike Threadless External Headset
