For 2012, a new magnetic air dropper seat post called Jewel has been introduced by Blacx. What makes this superb height adjustable seat post different and outstanding is that it tackles various concerns from drop post users, such as breakage, strength, and rotational play.
While it is made as lightweight as possible, the Jewel maintains its strength, thanks to its 7075-T6 aircraft grade aluminum alloy machined main cylinders, clamp head and rail clamps, as well as its single-piece upper cylinder and seat post clamp head.
Designed and built in Barcelona, Catalonia, the 2012 Blacx Jewel Magnetic Air Dropper Seat Post is one of the exciting new offerings on the cycling market today. The only downside of this seat post is its installation requires sliding off the brake lever, grip, and shifters.