Features1Aluminium Alloy Material: Constructed with aluminum alloy, ensuring strength and durability for long lasting performance on your mountain or road bike. 2Sealed Dual Bearings: The double sealed design provides waterproof protection, eliminating the need for maintenance. Experience fine and silent rotation for enhanced riding efficiency. 3Accurate CNC Craftsmanship: Through meticulous CNC machining and anodized coloring, these bearings have a fine surface that resists fading, adding a touch of sophistication to your bike. 4 Fit and Performance: The fine craftsmanship provides a seamless fit, allowing these bearings to work in harmony with your bike, enhancing its overall performance. 5Upgrade Your Riding Experience: Replace your old bearings with these accurate and efficient ones, elevating your cycling experience with improved smoothness and reliability on any terrain.SpecificationItem Type: Bike headsetMaterial: Aluminium alloyWeight: Approx. 100g / 3.5ozCompatible: For 44mm straight steerer with 28.6mm straight steerer front forkPackage List1 x Headset Star Nut5 x Headset Part