Crank Brothers Highline 3 Dropper Seatpost. Features: Self-contained sealed hydraulic cartridge Premium Trelleborg sealing and exclusive Igus LL-glide bearings and keys Internal routing with quick connect linear pull actuator Zero setback head, two-bolt fore/aft/tilt adjustment Jagwire cable and housing Remote not included 2-year warranty Specs: Model:Highline 3 Travel Drop:170mm Diameter:30.9mm Overall Length:509mm Insertion Length:285mm Weight:586g Color:black