The Covert Dropper Seatpost sets the standard for dropper posts... now available in all black. The Thomson Covert Black Dropper includes a new shifter oriented remote lever for easy operation. The cartridge-based system is designed to have the longest service life in the industry. If repair is needed its fast, affordable and simple. Every part that makes up the Covert dropper is carefully chosen and of the highest grade quality available. Custom made Norglide bearing bushings, custom made Trelleborg O-Rings and seals, Thomson saddle clamps and fasteners and Motul Oil. The Thomson Covert Black Dropper is hands down the industry standard.