The Mini-Coupler is 1" wide and fits from 1.65" OD to 2" OD Tube. The Mini-Coupler uses a 3/8″ × 3/4" long Grade 5 bolt with a Belleville washer and a Nyloc nut. The Mini-Coupler has a safe working load of 330 Pounds. (150 Kg) Minimum Size1.25" pipe, 1.66" OD pipe Maximum Size2" OD truss tube,1.5" pipe, 1.90" OD pipe Working Load Limit330 Pounds Hardware3/8″ × 3/4" long Grade 5 bolt with a Belleville washer and a Nyloc nut. Weight3 PoundsWhat is a Cheeseboro? Cheeseborough clamps aka Cheeseboro, Scaffold Clamps, Couplers, Swivels and even Cheese-burger or Burger Clamps. The name is believed to derive from the Chesebro-Whitman manufacturing company of New York. The devices are used for connecting iron pipes or aluminum tubes. They come in two styles; rigid (aka fixed 90¡) or Swivel.
