Reserve Wheels Reserve 30 SL Rim - 29", Disc, Black, Alloy, 28HReserve aluminum rims have been designed and developed to provide a product that rivals the performance of the much loved carbon wheels, but at a much more accessible price point. With an industry leading lifetime guarantee, you can feel confident you will be enjoying these rims for years to come. Backed by a lifetime warranty Product Specifics Brake Compatibility: Disc Only Rim Width (Internal): 30 Brake Track: None Manufacturer Spec ERD (mm): 599