Name: carbon fiber connector seat rod Material: All imported t-800 high-strength carbon fiber Appearance: 3K carbon fiber pattern Weight: 220-260G Application: mountain bike road vehicles BMX Diameter: 27.2-350mm / 30.8-350mm / 31.6-350mm 27.2-400 mm / 30.8-400 mm / 31.6-400 mm Angle: This product is part of the two screws, you can adjust the seat angle, so you ride more comfortable , Cushion 6X6 (round bow) 7X9 (oval) can be used Note: Seat has three direct dimensions 27.2 / 30.8 / 31.6, please confirm your car at the time of purchase Size requirements, to avoid size does not match, can not be used I undertake the Secretary, all kinds of carbon fiber products OEM, a variety of bicycle accessories brand OEM I welcome the majority of friends to guide the work of Division I