What tyre insert is this?
 

Its moulded 'foam' of some sort which feel very hard yet soft to touch.

Any idea what make/hardness of this insert ?

http://i1196.photobucket.com/albums/...206_135751.jpg

Core rc iirc.

Fastrax LP as seen here:
http://www.wheelspinmodels.co.uk/i/71909/

http://www.modelsport.co.uk/core-rc-...roducts/372064

I've never bought a fastrax insert and I've got 4 or 5 pairs of those downstairs!

Maybe they both get them from the same factory?

I agree they look just like the ones that came with some fastrax tyres I bought to test on our dirt track.
They were disappointing as they didn't fit the tyre to well,they were smaller once wheel tyre and insert were all together they felt horrible:o

Nice, what firmness is this? It came with my old buggy wheels... never used it.

I use those fastrax/core rc inserts with BB Spike whites. I have also used them in Schumacher yellows mini spike 2 as well and found them to be quite good.