Features:Made of high quality aluminium alloy material, which is durable and beautiful in appearance.Adopted anodized processing, anti-rust, colorfast, non-deformation and durable.High strength and unbreakable, long service life.Easy to install and reliable to use, very practical.Good replacement for your bike, make riding easier and more enjoyable.Specification:Condition: 100% Brand NewMaterial: Aluminium AlloyColor: Black 28.6*42-52*39.8(30)Surface treatment: AnodizingSpecifications: 28.6*42-52*39.8(30)Package Weight: Approx. 110gApplication:Standard vertebral fork on 28.6MM and lower 39.8MM (1-1/2), Standard straight tube front fork on 28.6MM and lower 30MM (1-1/8)Applicable Front Fork: Standard vertebral fork / standard straight forkApplicable Frame: Head Tube: Upper Inner Diameter: 41.8 (42)mm, Lower Inner Diameter: 52mmPackage Included:1 * Set of Bicycle Headset.