description of goods: If you need to raise your handle bar, use these spacers. One way to lighten up your bike is to replace your metal spacers with these super light 100% carbon fiber spacers. Constructed of full carbon fiber, exquisite workmanship. Lightweight and easy to install. Has 4 different size spacer to fit for your need. It is perfect to get a good fit on your bike. Feature: 1. Constructed of full carbon fiber, durable and exquisite workmanship.2. Lightweight and easy to install and remove. 3. 4 different size fit for your demand, meet different needs. 4. If you need to raise your handle bar, use these spacers. 5. Perfect to get a good fit on your bike. Spezifikations:Material: Carbon Fiber Color: Black Weight: 27g (4pcs) Diameter: approx. 3.4cm / 1.3 Size: 5mm, 10mm, 15mm, 20mm / 0.19, 0.39, 0.59, 0.78 Quantity: 4pcs (5mm, 10mm, 15mm, 20mm) Package Included: 1 x 4pcs full carbon bike spacer Notice: Please allow 1-3mm error due to manual measurement. Thanks for your understanding.