The 5th generation of Giant's Contact Switch dropper post features a redesigned chassis for smooth action and rock-solid, play-free operation, a wider range of lengths and travel to fit more frames and riders as well as an all-new ergonomic thumb control that integrates perfectly with all 1X control systems.Redesigned chassis for more stability and less playRedesigned ergonomic thumb control lever compatible with 1x control systemsWider range of travel available for more frame sizesEasily serviced with replaceable cartridge technologySPECIFICATIONS:Material - 7075 AlloyDiameter - 30.9mmTravel - 125mm, 150mm, 170mm, 200mmLengths - 409mm, 459mm, 499mm, 559mmWeight - 575g (150mm) including remote and cable