The open pro tubular cd 700c rim is a 32 hole tubular mavic rim which is extremely light described by mavic as the best road race tubular rim on the market it is made from maxtal and has a sup joint with traditional drillings and a ub control brake track it comes with in black or black the couche dure finish which is a process that creates a micro surface hardness that slows down braking wear and improves durability available in 32 hole only with a 22mm width