High impact plastic holds dual gold plated metal plugs and 
gold plated metal screws.  Unit fits standard spaced 
Dual Binding Post terminals and standard push terminals
and are stackable (top of screws have holes for another 
dual plug).  Push speaker wire through hole and screw knob 
down to compress wire.

PRICE EACH . . . . . . . . . . . . . . . . . . . . $3.96