Extremely light. The best Road race tubular rim on the market.As the only tubular rim available, Open Pro Tubular gets all the experience of Mavic's decades of lightweight tubular rim engineering. It features all Mavic high end technologies: SUP, Maxtal, UB Control, CD.**Maxtal aluminium alloy**Light and strong and exclusive to Mavic. This specific aluminium alloy offers a higher strength to weight ratio than conventional 6106 alloy**SUP welding**Strong and smoother. After bending the rim joint is arc welded. The welded seam is then milled for a smooth finish**CD Surface treatment**This process creates a micro surface hardness of the rim**UB Control brake track**Precisely CNC machined to offer high reactivity**Specifications*** Material: Maxtal* Braking: Pads* Profile: Symmetrical* Joint: SUP welding * Drilling: Traditional with eyelet* Height: 15mm* Internal width: 22mm* ETRTO: 28* Tyre: Tubular* Valve hole diameter: 6.5mm* Recommended tyre width: 20 to 22mm* Weight: 360g