Rubber Fence Posts?

[geraint]

Hi all, about 10 years ago I bought half a dozen 8 foot black posts which I was told at the time were made of recycled tyres, like a "H" profile so standard panels could be slid in between. These posts are still like new even though I'm on about the third set of panels. I would like to get some more of these posts if possible, does anyone know where I can get them?. I have done several searches on the WEB with no success. Thanks. DGJ