This is Monster Cable's Standard four conductor UL CL3 rated 16 Gauge speaker wire. Monster Cable S16-4RCL features a large copper conductor area with special windings for improved power clarity and dynamics. The Monster can provide you with tighter, deeper bass, greater clarity, better imaging, and cleaner highs. When deciding what to use to hook up your stereo system, Monster offers the highest quality choice available.

• 16 Gauge high performance speaker wire
• Wide dynamic range, improved bass performance and extended frequency response
• Special strandings for improved clarity and more natural music reproduction
• Large copper conductor area for better power transfer and good dynamics
• Special Monster Cable winding configuration for improved clarity and a more natural reproduction of the music
• Improved low frequency signal performance and clarity 
• CL3 Rated for In Wall Installation
• 4 Conductor Speaker Wire
• White Color Jacket
• 150 Ft Length Spool