This is the classic Dura-Ace AX seatpost for frames with round 27.2mm seat tubes, model SP-7310. This post is about 220mm long, with about 150mm of usable length (measured from middle of rail seats to end/minimum insertion line). It is fully functional with no problems. The satin anodized finish is deep and even and silky smooth. The is a little bit of marking from use. I have uploaded large photos. Please take a look. Thanks!