Features1APPLICATIONS: Bike front fork washer is suitable for forks with an outer diameter of 28.6 mm, Bicycle headset spacer is suitable for most road bikes, mountain bikes and so on. 2MULTIPLE SIZES: This package contains 7 different sizes, 2mm, 3mm, 5mm, 3pcs 10mm, 50mm, the smaller size of the shim headset allows you to adjust the height more accurately. 3 CRAFTSMANSHIP: Bicycle handlebar stem spacers have smoothly edges, suitable for most bicycles, delicate texture and exquisite workmanship. 4EASY TO INSTALL: Bicycle handlebar spacer aluminum alloy is easy to install, light weight and will not add burden. 5ALUMINUM ALLOY: Bike front fork washer is made of aluminum alloy, sturdy and durable, not easy to damage, can be used for a long time.SpecificationItem Type:AluminumAlloyBicycleHeadsetSpacerMaterial: Aluminum AlloyThickness: Approx. 2.6mm / 0.1inApplication: Approx. 28.6mm / 1.13in ForkOuter Diameter: Approx. 34mm / 1.34inHeight: Approx.2mm / 0.08in3mm / 0.12in5mm / 0.2in10mm / 0.39in50mm / 1.97inPackage List7 xBicycleHeadsetSpacer