Specs 1190 grams per pair (no skewers) Extralite UltraHubs Alloy clincher 19mmx w24mm Tubeless ready Black Straight pull, triple butted spokes 24 Hole front, 28hole rear Black Ergal Nipples These are hardcore clinchers for your training duties and weekend racing. The heart of these wheels are the Extralite UltraHubs SPX/SPM with the micro tuner to get bearing preload exactly right. Laced with black triple butted spokes onto a 24mm tall rim. The extra wide rim chamber gives a more straighter tire profile and excellent lateral rigidity, as well as altering the surface area of the tire's contact patch giving a more solid feel during hard cornering efforts. Yep these are light, but far from flexy or fragile. Tie these up with a set of Far and Near Skewers and you have a ready to roll wheel-set weighing in at a massive 1236grams. That sure does give us a bit of time to sit back and let the mass producers catch up.