Compared to traditional quick releases, a 15mm thru axle offers better suspension function and more precise steering all good things. And you can still take your wheel off in a snap. Combine this with the quality and lightweight features of the DT Swiss 240s hubs, and the DT Swiss 240s 15mm Thru Axle Mountain Bike Hub is the best option for those using a 15mm front fork. As opposed to converting down a 20mm hub, this 15mm specific hub has a smaller, lighter bearing and less material in the normal sized hub shell. It saves 38 grams from the oversize 20mm hub. The lighter weight of the 15mm hub lets you take advantage of the potentially lighter overall weight of the 15mm axle system in contrast to going for the 20mm axle. And if you aren't hucking off cliffs, the 15mm axle is all you'll ever need to do normal things like ride really fast, carve beautiful berms, and bomb down rocky trails with confidence. DT Swiss hubs start life as an aluminum forging and then are CNC machined into shape. Two high precision stainless steel cartridge bearings are pressed into either side, and they have contact free seals to keep everything silky smooth. The flanges are drilled for 32 spokes and available for either 6 bolt or CenterLock rotors.