Features: The headset is made of quality aluminium alloy material, anti-rust, sturdy and durable. Fine machining ensures sleek surface and smooth rotation, fits perfectly with your bike headset. The sealing ring is good for keeping dust and water away to lengthen the durability. Built-in grease in the slot can prevent the balls from corrosion and make them rotate freely. Useful accessory for replacing old headset of bike. Specification: Material: Aluminium Alloy Color: Shown as picture Group Height: 7.3 + 13 = 20.3mm Weight: Approx. 135g Suitable for most mountain bikes and part of road bikes with tube inner diameter of 44mm Package List: 1 x Bike Headset Set 1The headset is made of quality aluminium alloy material, anti-rust, sturdy and durable 2Fine machining ensures sleek surface and smooth rotation, fits perfectly with your bike headset 3The sealing ring is good for keeping dust and water away to lengthen the durability 4Built-in grease in the slot can prevent the balls from corrosion and make them rotate freely 5Useful accessory for replacing old headset of bike