This cyclocross specific rim only comes in a handbuilt wheel. The tubular rim that has set the cyclocross world on fire! In stock and ready to be built with your choice of hubs. The wider profile means a wider gluing area for better contact, especially important with lower cyclocross tire pressure. There is a seam relief channel inside the profile because the inside of a tubular has a seam. And a wider brake track for better stopping power.