... super light 4.OEM carbon bicycle seat post/full carbon seatpost Features:1. Made of Toray T700 high modulus carbon ... Group Set, Carbon Crankset, Carbon Fork, Carbon Headset, Carbon Seatpost, Carbon Clamp, Carbon Saddle About ROSIT Shenzhen Rosit industry co ... producing Carbon bicycle frame, carbon bicycle forks ,carbon bicycle seatpost ,handbar and other carbon bicycle accessories for several years. ...