The Jack dropper post is available in three drop options 185mm, 160mm, and 80mm for improved handling when you need it. Available in 30.9 and 31.6mm diameters, the Jack includes a Manitou under bar lever which features a cartridge bearing for smooth, precise operation. To further the smooth operation and setup on the 185mm and 160mm post the included 1.1mm cable with Manitou specific cable head negates the use of the cable clamp, allowing all the cable tension adjustment to be completed on the lever side. 80mm post uses a standard derailleur cable for its lever side adjustments.