Few, if any, brands in the bike industry have a reputation as sterling as Mavic's. This isn't the byproduct of marketing puffery. Rather, they've earned every ounce of esteem thanks to the quality of their innovations. Because of Mavic, the rims and wheels we ride on are different and wholly superior to anything we might have otherwise imagined. While their accomplishments are too numerous to list, their most noteworthy breakthroughs have an easy familiarity to all of us. The SUP and UB Control technologies they pioneered in the early 90's gave a quantum boost to rim strength and brought us the glory of the machined braking surface. If you're interested in hand-built wheels, the Open Pro rim is the only place you need to look. They provide a perfectly machined braking surface and a welded/machined sidewall ensuring consistent and reliable day in and day out performance. It's a modern classic. 425g.