RIM AN (AM) 20 406x31 CLASH FULL UD CARBON TBLS 36 BKAlienation`s first rim produced used a new p20 tool steel in-mold for smoother more durable finish. Full Toray T700 and T800 carbon fiber composite material. Designed and drilled specifically for 3 cross lacing. Weight limit 220lbs. Item Specifications: Size, 20in, Width OD, 38.2, Side, MSW, Drill, 36, ERD, 379, Wall, Dbl, Valve, SV, Model, Clash Carbon, Profile, 25, Tire Compatibility, Tubeless Compatible, ISO, 406, Width ID, 31.2, Brand, Alienation,.