The Mankind Vision Rim is a 36H double wall rim with a 3 internal chamber design. It's made from 6061-T6 Alloy and has a welded joint. The rim has a 36.1mm outer width, 28.3mm inner width, is 18.7mm tall and has a 11.4mm brake side. ###section### Product Specs WHEEL SIZE: 20mm SEAM: Welded ERD: TBC HEIGHT: 17.7mm WIDTH: 36.1mm SPOKE HOLES: 36 WEIGHT: 499g