The TranzX SP39 Dropper Seatpost features 150mm of travel and a 34.9mm diameter, making it compatible with many bike frames. It includes an Up/Down lever for quick adjustments while riding. Made from lightweight alloy #7075-T651 with a polished black finish, it offers both durability and a sleek look. Ideal for riders who want to easily adjust their seat height, the TranzX SP39 is a reliable and convenient addition to any bike setup.