Double wall design with a monolithic cavity gives the Envy rim a unique design; front and rear specific extrusions allow full customization for weight savings and durability. Features: Welded seam Eyeleted spoke holes Double wall construction Specifications: Wheel Size: 20" ISO Diameter (ETRTO): 406 Effective Rim Diameter (ERD): 390mm Spoke Count: 36H Brake Type: Disc Brake Rim Joint: Welded Rim Dimensions: 21.2mm (Internal), 29.5mm (External) Valve: Schrader Tire Type: Clincher Material: Aluminum Color: White Weight: 392g