Monoprice 50ft 16AWG CL2 Rated 2-Conductor Loud Speaker Cable (For In-Wall Installation) Lifetime Warranty on ALL Cables: With Monoprice's Lifetime Warranty you can rest assured we stand behind our products and our customers. Oxygen-free 99.95% pure bare copper conductors 50 continuous feet of 16AWG 2-conductor speaker Wire | on a spool The white outer jacket is CL2 rated, making it safe for use within the walls of residential class buildings Each conductor has an individual, color-coded jacket enclosed within the outer white CL2 jacket