Dt swiss D232 One Dropper Post 27.2mm 400mm Black Carbon 0mm 369g 60mmDeveloped for cross country riding and racing, the D 232 ONE is super light Upside down technology allows for a very robust release mechanism The fully mechanical system is highly reliable and has no need for bleeding due to the release being driven by a spoke Tool free maintenance can be performed quickly without removing the post from your bike Quick release actuator allows for easy assembly and disassembly Carbon fiber seat tube and saddle clamp L1