Everything about DT's A 1800 Spline 30 is designed to make the discovery of a new world of speed accessible and enjoyable. Based on there first aero-optimized alloy rim, it marks the democratization of DT's Aero category. In addition to the rim, hidden nipples and aero spokes enhance the aero advantage.   Rim An all-new aerodynamic and light rim shape, 30 mm height, 20 mm inner width and hidden spoke nipples are the ingredients to let you reach new top speeds with ease.   Spokes Pushing aerodynamic advantages further are the DT Aero Comp II straight pull spokes, featuring a redesigned shape, making them faster than their predecessor.   Hub The 370 hub now features the Ratched LN system, and with it signature freewheeling sound, it will reward you at the end of every sprint.   Rims Rim: Alloy, TL-Ready. Height: 30mm. Inner Width: 20mm. Outer Width: 24mm. Brake Surface: Disc.   Hubs Hub: DT Swiss 370. Front Axle: 12mm. Rear Axle: 142x12mm. Freehub: Shimano. Rotor Mount: Centrelock.   Spokes: Count: 24 Front, 24 Rear. Spokes: DT Aero Comp II.   Other: Supplied With: Tubeless Tape (fitted). Weight: 1799 g .