Bare Copper GRAY Shielded 22/2 500Ft Security Cable Stranded - Alarm, Audio, Signal, Control, Access Wire - Made in the USA! - In-Wall Riser Rated CMR CL3R Bare Copper Gray Shielded 22/2 500ft Pro-Installer Series - Blowout Priced - Limited Qty's Avail CMR,CL3R, Rated for Home In-Wall or Commercial Riser Applications Professional Use Quality - 300v - Produced specifically for DiyHomeTheaterSupply Stranded Bare Copper Wire Conductors - 100% Al-Mylar Shielding (NOT inferior copper clad aluminum!) UL/ETL Listed - Certified "ROHS" Safe - Professional Installer Safe and Quality to meet Codes