... :1.Toray T700 carbon fiber, 700c full carbon rim 2.20mm clincher 3.3k.12k,or ud with glossy coating or matte finish4.weight ... for all of our products and lifetime maintainance. 4.The carbon fiber material is 100% imported from Toray ,Japan. 5.We ... of our engineers have more than ten years experience in carbon fiber field.Product Show: 29er, Clincher carbon fiber bicycle rims,matte finish or glossy