A professional from USA says:
May 13, 2014
We are looking for a quantity of these wheels if you have them
Dave from SWISCO responded:
May 16, 2014
It's hard to say what you have based on these dimensions, but start out by looking at our 81-163 and seeing if this is a possible match. Carefully compare the specs we show for this roller to your own hardware and see how well they match.