This listing is for one pair (two) of terminal block (Cinch, made in US), 4X screw & lok nut for installation.

One pair of terminal blocks are 24k gold plated (10 - 12 µm plating thickness) by professional plating company in CA. 

Original terminals are tin plated steel Y-terminals and nickel plated steel screws. it will be no problem on conductivity in new condition but tin and nickel plating were degraded by age, possibly steel part of terminals will be exposed on speaker wires.

It will upgrade MC 30, MC 60 &  MC2300 amplifiers.