Ionic 0 Pro offers 3t-patented difflock splined coupling to provide a secure, non-slip saddle clamp with adjustment precision down to 0.2 degrees and a 0 mm set back. The fore-aft adjustment of the saddle does not affect the saddle angle. With its neat, compact design it also looks great and stays clean when you are out in less than ideal conditions. Fits 70x10 mm oval-railed saddles with an oval rail end cap and replacement caps for round 7mm rails are available. This and all 3T seatposts comply to road and MTB usage. Made of al-alloy with a shot peened Black anodized Finish weighing in at 230 grams (for the 31.6x280mm). available in 2 lengths and diameters.