These headset spacers are designed to be compatible with both mountain and road bikes, making them a versatile accessory for any cyclist. Whether you're a pro or just starting out, these spacers can help to enhance your cycling experience and improve your performance on the road or trail. Features -Color:Black -Material:Carbon fiber -Size:3.50X3.50X1.00cm/1.38X1.38X0.39in -Size:2.90X2.90X1.00cm/1.14X1.14X0.39in -Practicality: The practical bike handlebar spacers can help to reduce the overall weight of your bike -Wide applications: A wide range of bikes and components, making them a versatile accessory for any cyclist -Durability: These Spacers is also resistant to wear, ensuring that they stay in good condition for longer -Simple to use: These spacers can be used to adjust the height of your handlebars -Good experience: Help to reduce the strain on your neck and shoulders, making long rides more comfortable and enjoyable Package list: 2 x Spacers(2mm) 2 x Spacers(3mm fine tuning) 1 x Spacer(5mm) 1 x Spacer(10mm)