This is a 650c 26 inch class closed wheel, super light weight, the material is Japan Toray t800, a wheel weight is 1130g, is very excellent existence. The inner molding material is pmi aero material with super rigidity. Fillers can be very good to reduce the noise of the wheelset, hubs can be customized, dead fly version , road version, rim brake disc brake, quick release barrel axle can be customized.