KOM Tough Built for bashing, from downhill to fully loaded bikepacking rig. AL 6069 alloy to provide utmost durability at a reasonable weight. Legendary I-Beam construction has evolved to further reinforce the rim with dualsupport beams . Proven on the toughest tracks of the Enduro World Series. Item Specifications: Manufacturer Spec ERD (mm), 584, Defined Color, Black, Rim Center Offset (mm), Symmetric, Rim Construction, Aluminum - Welded, Hub Drilling, 32, Requires Eyelets?, No, Rim Width (Internal), 40mm, Rim Material, Aluminum, Brake Caliper Type, Disc, Tire Type, Tubeless Ready, Valve, Presta, Wheel Size, 27.5'', Minimum Wheel Diameter, 27.5'' / 584,.