Race Face AR Offset Rim. Features: Asymmetrical rim builds up with more balanced left/right spoke tension Sleeved 6061 aluminum with 4.5mm spoke hole offset Tubeless ready with strong tire retention bead Specifications: Wheel Size: 27.5" or 29" ISO Diameter (ETRTO): 584 or 622 Effective Rim Diameter (ERD): 562mm or 600mm Spoke Count: 32H Brake Type: Disc Brake Rim Joint: Sleeved Rim Dimensions: 25mm, 30mm, or 35mm (Internal), 20mm (Depth) Valve: Presta Tire Type: Tubeless (Clincher) Material: Aluminum Color: Black Weight: 470g (29" | 25mm Width), 514g (27.5" | 30mm Width), 545g (29" | 30mm Width), 552g (27.5" | 35mm Width), 583g (29" | 35mm Width)