The Open Pro reinvented, with the high-end technologies of Mavic's Wheel-Tyre Systems, including ISM4D and UST. The rim bed shape improves the mounting of any tyres, tubeless and tubetype. UST tape and valve sold separately.**Features****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**ISM 4D light rim**Inter Spoke Milling 4 Dimensions. An exclusive Mavic patented concept, reducing weight and inertia without compromising durability. Faster acceleration, better handling and more resistance. The perfect mix to make the most of any ride. **SUP welding**Strong and smoother. After bending the rim joint is arc welded. The welded seam is then milled for a smooth finish**UST Tubeless technology**Traction and control. The UST concept improves traction, control and comfort while reducing inertia and flats**Specifications*** Material: Maxtal* Braking: Disc* Joint: SUP welding * Drilling: Traditional with eyelet* Height: 20mm* Internal width: 19mm* ETRTO: 622x19TC* Tyre: Tubeless ready* Valve hole diameter: 6.5mm* Tubeless tape width: 25mm (Not included)* Recommended tyre width: 23 to 62mm* Weight: 430g