Speaker wire is made from copper wire that can corrode very quickly, rapidly deteriorating the performance of your cables and the overall performance of your system. To avoid this, always terminate your speaker wire with connectors. The kind of connector you need varies with the kinds of connectors on the back of your amp/receiver and your speakers. Monster's QuickLock connector system is the fastest, easiest way to install the right connector to your speaker cable for maximum performance and reliability. PRODUCT FEATURES: Two piece screw-on design for easy and reliable crimpless and self-crimping termination; 24k gold contacts for maximum signal transfer and corrosion resistance; Wider base minimizes shorting for maximum signal transfer; Special teeth and ring-lock for strong grip that stays tight for optimum signal transfer; Precision-machined flat undersides for maximum contact and superior signal transfer.