The Race Face ARC HD Disc Rim.

Specifications:
Wheel Size: 27.5"
ISO Diameter (ETRTO): 584
Effective Rim Diameter (ERD): 558mm
Spoke Count: 32H
Brake Type: Disc Brake
Rim Joint: -
Rim Dimensions: 30mm (Internal), 34mm (External), 22mm (Depth)
Valve: Presta
Tire Type: Tubeless (Clincher)
Material: Aluminum
Color: Black
Weight: 565g