We found that many carbon headset spacers are actually fiberglass with one outer layer of carbon. And they are often not square! Making your headset stiff. If you want it done right, you have to do it yourself. 100% carbon fiber, lathe cut, nude finish. No annoying logos. Specify 1″ or 1 1/8″ and the overall length in 5mm increment. Get one spacer the right length. Oh, and because they are 100% carbon, they are the lightest. But you don’t care about that, right?