This is a used USE aluminium seat post from the early 1990s.

It is anodised red and has a two bolt inline clamp.

The post is 350mm long and 25.0mm in diameter. It comes with a shim to fit 28mm seat tubes, but this is obviously easily replaced to work with other seat tube diameters.

It has marks in the anodising, but it is still in good working order. 

Perfect for a retro mountain bike build.

Thanks very much for looking. Please check out my ebay shop for loads more bike stuff.