... Polyethylene, good pliablity, transpatence, extensiblity, resist dissolve and radiation.Working temperature: -40 centigrades to 65 centigrades.PP, Polypropylene, inflaming retarding, ... retarding, good resist dissolve, good bounce inpact force. Working temperature: -30 centigrades to 110 centigrades.Brass, screw is iron ... ;Color: nature color as standard. PHX107B U(W) Type Copper Terminal Block Series