Re --Plastic rebar-- and --metal rebar-- each should be followed by 'supports'.
We are working on plastic rebar but it's not quite done yet - no reports at any rate.
Plastic rebar is in existence, from others, already.
I saw today where metal rebar (the rebar, not the supports) has had two price increases this last 30 days - one of $40/ton followed by another of $20/ton. Thus making our plastic rebar, when it arrives, even more attractive.