X-Fusion HILO Strate 30.9mm Dropper Post 150mm with Remote Cable activated, hydraulic action, infinitely adjustable travel Double bolt clamp with wide range of seat angle adjustment. Fits both standard and 7 x 9 mm Carbon Rails BAT remote with uni-directional lever mounts on left/right, above or below handlebars 2-Year Warranty Double key-way design prevents lateral twisting