The DT Swiss RR585 rim is an aerodynamic alloy rim that has a slightly narrow 19.6mm width matched to a deep 30.7mm deep profile. The added alloy and deep profile not only makes for a more aero rim, but greatly increases the strength.
The rim itself is constructed from extruded 7000 series aluminum. The rim is this cut and welded together using DT's proprietary SBWT welding process. The rim is completely anodized and the sidewalls are machined for a flat, smooth and consistent braking surface. There are small drillings on the sidewalls so you can measure the amount of wear on the rim.
The RR 585 extrusion process and all other rim fabrication takes place right in the DT Swiss factory for ensured quality control. The strength is unmatched by any other aluminum rim currently produced.