Features 1、The shell of the headset is made of T6 heat‑treated high‑strength aluminum alloy material, which is sturdy and durable. 2、CNC process processing, the weight of the headset is still light and the strength of the headset will not decrease. 3、Equipped with double bearing, it is smoother and easier to maintain than loose ball bearing, and the turning of the handlebar is light and smooth. 4、With rubber waterproof ring, it is anti‑corrosion, waterproof and sand‑proof for longer life. 5、Durable, smooth, light‑weight, long‑lasting headset, representing the perfect balance of performance, suitable for mountain bike and road bike. Item Type: Bike Double Bearings Headset Material: Aluminium Alloy Product Color: As Pictures Shown Product Weight: Approx. 113g / 4.0oz Applicable Frame: Head tube (upper inner diameter 44mm / 1.7in , lower inner diameter 44mm / 1.7in); Front Fork: Standard straight front fork (upper 28.6mm / 1.1in, lower 30mm / 1.2in ) Standard tapered front fork (upper 28.6mm / 1.1in, lower 39.8mm / 1.6in ) Package List 2 x Bearing Headset 2 x Pressing Ring 1 x Headset Cover 1 x Sunflower Screw Top Cap