Description: 【Compatibility】: This Bicycle Front Fork Washer is designed for standard 28.6mm tube diameter, and it requires the headset to be a hidden type 44mm upper headset. 【NOTE】: Please measure the approximate size and specifications of your headset cover before purchasing, as this product is not universally compatible. 【Quality Material】: Made from stable aluminum alloy, this bike headset taper washer ensures long term use performance and durability. 【Versatile Use】: Ideal for both road and mountain bikes, this Bicycle Taper Washer provides a secure and reliable use fit to enhance your cycling experience. 【Easy Installation】: The Bike Front Fork Conical Stem Spacer can be easily installed on your bike, offering a practical solution for bike maintenance and upgrades. Specification: Material: Aluminum Alloy Size Chart: 4.9cmx1.5cm/1.93inchx0.59inch Package Includes: 1 Bicycle Front Fork Washer(4 Pack) Note: Please allow slightly errors 1-2cm differences due to manual measurement.