Feature: The headset is made of quality aluminium alloy material, anti-rust, sturdy and durable. Fine machining ensures sleek surface, fits perfectly with your bike headset. The cap is good for keeping dust and water away to lengthen the durability. Can prevent the bearing from over-abrasion and make it rotate freely. Useful accessory for replacing old headset of bike. Spec:Material: Aluminium AlloyColor: BlackApplicable front fork: applicable front fork standpipe 28.6mm/1.13in outer diameterApplicable frame: applicable frame front pipe 44mm/1.73in inner pipe diameterWeight: Approx. 115gPackage List:1 x Bike Headset