I have 2 maybe 3 of these aluminium sections with rollers, They seem heavy duty and the rollers feel like hard nylon they are just over 1700mm long and 500mm wide to the outside edges, the rollers internally are almost 450mm there must be plenty of uses for these i am cutting a section in half and making a chop saw stand and a mate has used some for dragging muck buckets up to ground lever during a cellar dig out, They can be made narrower if you needed by removing the blue end caps on the rollers and reducing the roller lengths, looking for £60 per section, collection only from Wolverhampton WV4.
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All sold now thanks