Paul from SWISCO responded:
May 13, 2013
Thanks for posting, Mark. I don't think those two holes are important, since it appears to be a self locking/pressure fit roller. Check out our 87-006 and see if it's a match.
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Tom from SWISCO responded:
May 16, 2013
Unfortunately, we have been unable to find this roller with the two holes in the top of the housing. I am sorry we cannot be of more help.
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