This button fits both square tube and round tube.
Round Tube – Minimum 1.00″ inside diameter up to Maximum 1.95″ inside diameter.
Square Tube – Minimum 1.00″ inside dimension up to a Maximum 1.950″ inside dimension.
HD DIA. = .365″ Dia. Button
HD HGT. =.500″ Button Height
Material Thickness = .025″ thick
Material Width = .530″ wide