These dropper posts from TranzX provide precise operation and quality construction at a wallet-friendly price point. Get the same performance and reliability of some of the most popular dropper posts out there at a fraction of the cost. These are OEM spec posts so they'll come in plastic wrap rather than a fancy branded box. Who's this item for: Savvy shoppers will know a great bargain when they see one! These posts are suitable for use on XC, Trail, and Enduro bikes. Actuation style: Mechanical actuation with the barrel end of the cable attached at the dropper end and the loose end of the cable clamped at the lever. Spring style: Replaceable air cartridge - air pressure/return speed is not adjustable. Infinite or finite adjustments: These are infinite adjust posts which means that you can put the post all the way up, all the way down, or anywhere in between. Internal or externally routed: Internal/stealth cable routing. Includes cable / housing / battery: Yes, there is a cable and housing included Saddle clamp style: Standard 2-bolt micro-adjust. Weight: (excluding cable set 90g) 30.9 x 150mm: 580g 31.6 x 150mm: 600g 34.9 x 150mm: 685g