The uber-fit and uber-flexible Pro racers do what they do, and the rest of us -- well, we do what we have to do. That usually means a bit of height adjustment between the top of the headtube and the bottom of the stem for a saddle to handlebar drop that we can ride for extended periods of time without too much physical aggravation. Wheels Manufacturing makes their Carbon Fiber Headset Spacers in a variety of thicknesses to give you the ability to custom tailor your handlebar and stem height, all the while looking as good as your top level carbon fiber steed.Keep in mind that if your steerer tube is made of carbon fiber that you can generally stack your spacers no higher than the diameter of your steerer (check your fork or frameset owner's manual for exact guidelines). For a 1-1/8" steerer you can have an approximate stack of 30mm. Wheels Manufacturing Spacers are free of logos -- just luscious clear-coated carbon fiber. They come in four thicknesses -- 5mm, 10mm, 15mm, and 20mm.Product FeaturesMaterial: carbon fiberWeight: Recommended Use: spacing the stemManufacturer Warranty: