Titanium Seatpost for Brompton
Material:TitaniumGR9 Ti-3Al-2.5V
Main Pipe wall thickness：1.2mm
Φ center:31.75mm;
Length: 550mm， Extended Version：600mm
Weight：
Original Type , Weight: 248g±3g ，63.9% of the weight of the original seatpost，save weight:140g
Balance Type , Weight: 346g±3g ， 70.0% of the weight of the original seatpost，save weight:149g
600mm Extended Version: Add 26g
