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The Mega-Coupler will fasten from 1-1/4" pipe (1.660" OD) to 2.050" OD truss tube. The Mega-Coupler has the wide wing nuts for fastening the clamp to the pipe or tube. Safe Vertical Working Load 1100 Pounds, (500 KG).
To avoid breakage, do not use excessive force when tightening screws or bolts. Do not use any broken, cracked or worn out items.