Monster Cable QL GMT-H MKIII EFS QuickLock MKII Gold Banana Connectors for Easy Self Crimping Terminations: Corrosion-Resistant 24K Gold-Plated Connectors 24k gold plated contacts resist corrosion for a lifetime of durability. Nine separate 24k gold plated beryllium-copper leaf spring contacts for maximum signal transfer. Special teeth and ring-lock for strong grip that stays tight for optimum signal transfer. Four piece screw-on design for easy and reliable crimples and self crimping termination. Wider base minimizes shorting for maximum signal transfer.