Trek 7mm carbon integrated seatpost

Trek compatible integrated seat post

It is available in black and white, with a wide variety of lengths and setbacks. Includes hardware compatible with round seat rails only. Hardware compatible with 7x10mm carbon rails is sold separately.
Product Details

     Ultralight carbon construction
     Direct fit on all Trek road bikes with round triple clamps
     matching colors
     Single bolt head design offers easy fore/aft adjustment
     Includes 7mm round seat clamp adapters; 10mm adapters sold separately