Lighten Your Bike, Not Your Wallet Conquer mountains, flatten hills, and feel your bike come alive with this utra-light 1365 gram wheelset. Mass is the enemy of performance, and the Alpinist CL is the lightest wheelset in its class. Weight has been pared to the absolute minimum to make the make the most of every watt and deliver incredible responsiveness without sacrificing any of the strength, ride quality and durability that are crucial to long-term performance and satisfaction.Rim Type: Carbon, clincher (tube-type),Rim Material: Carbon,Braking Surface: Disc brake only,Rim Depth: 33mm,Rim Width: 21mm internal,Spoke Pattern: Radial/Two-cross (2:1) Front and One-cross/Two-cross (2:1) Rear,Spoke Count: 21F and 24R,Spoke Type: DT Swiss Aerolite T-head,Nipple Type: DT Swiss Pro Lock hexagonal,DT Swiss 350, Center Lock, Sealed Cartridge bearings, DT Swiss Star Ratchet internals,142x12mm thru-axle compatible,Assembly Method: Hand-built,Weight: Front - 601g; Rear - 764g.