Item Type: Bike Headset Spacers Material: Aluminum Alloy Weight: Approx. 129g/11.18oz Color: Black Package List 1 x Headset Cap 1 x Upper Headset 1 x Lower Headset 2 x Bearing 1 x Bottom Cup 1Industrial Grade Bearing: With the increase of service time, bicycle headset spacers will rotate more smoothly. The low stack thread can make the thread bite tightly and ensure that it will not fall off automatically after installation. 2CNC Machined: It is accurately cut by CNC, with high compression resistant and twisting resistant , so that it is sturdy, high strength durable for long service life. 3Anode Processing: The anode uses the characteristics of aluminum alloy to prevent further oxidation of aluminum and increase the mechanical property of the surface. 4Aluminum Alloy Material: Our headset spacers are made of premium aluminum alloy material, which is stable in performance. And it's lightweight, so it won't burden you with riding. 5Fine Workmanship: The bike headset spacers are finely crafted to fit your bike perfectly. Fine polishing, bright surface treatment, anti corrosion, rust prevention, non oxidation.