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The Swivel Coupler will fasten from 1 1/4" pipe (1.660" OD) to 2.050" OD truss tube. The Swivel-Coupler has wide wing nuts for fastening the clamp to the pipe or tube.
The Swivel Coupler can be locked into a 90 degree fixed coupler by adding an optional 7/32″ × 2″ spirol pin (see Coupler Spare Parts).
To avoid breakage, do not use excessive force when tightening screws or bolts. Do not use any broken, cracked or worn out items.