{HEAD ~ a first fastener} for {TAIL ~ fastening} between said first end portion and said roller frame assembly, said first end portion being in contact with said roller frame assembly when said mounting cap is clamped to said roller frame assembly 
{ HEAD ~ a first fastener } for { TAIL ~ fastening } between said first end portion and said roller frame assembly , said first end portion being in contact with said roller frame assembly when said mounting cap is clamped to said roller frame assembly
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