Monster Performer 500 - 6' Speak-On Connectors Color-Coded Rings - for easy identification when you're plugging in multiple cable. Several colors included Ultra-Flexible Duraflex Protective Jacket - Coils & uncoils effortlessly. Withstands heavy use and provides cut resistance for stage and studio applications. Special Copper Windings - Provides improved clarity and tighter bass, even over long lengths. Hard nickel contact 1/4" connectors or Monster Tips (bananas) are durable and corrosion resistant. Magnetic Flux Tube construction and special cable windings for natural music reproduction. Heavy-Duty Shielding - Dense copper braided shield for excellent noise rejection CL3 rated for in-wall installations.