Features1Aluminum alloy material,lightweight and durable. 2Hydraulic and air pressure cartidge ensure fast and smooth raise.But you need to press down the seat to get the lowest point by labor. 3Wire controlled height adjustment meets your different needs. 4Compatible with internal routing remote control only. (control switch at the bottom). 5Come with a set of wire control components. 6Easy to tailor the cable length as you need.Cable length: 1600mm/5.2ft. 7Only suitable for most mountain bikes with the handle diameter: 22.2mm.SpecificationSpecification:Outside Diameter: 30.9mmMaximum length:395mmType: Wire Controlled Hydraulic Seatpost with Internal RoutingMaterial: Aluminum alloyFits handle: 22.2 mmSeatpost weight: approx. 474 - 615 g / 16.7 - 21.7 ozCable length: 1600mm / 5.2ftPackage weight: approx. 527 - 668.4 g / 18.6 - 23.6 ozPackage List1* Wire Controlled Hydraulic Seatpost 1* Set Of Wire Control Component