ETI Research Kryo Binding Post (par)The ETI Research Kryo Binding Post is like no other on the market today. The conductor is made from Silver Plated Tellurium Copper for not only superior conductivity but long lasting durability. CONDUCTOR Silver Plated Tellurium Copper HOUSING Brass (Black Finish) Special attention has been made to wall thickness to allow enough mass for the high current demands necessary in many speaker designs. We have also taken enough unneeded mass away to allow