FOR INDOOR/OUTDOOR USE: Heavy-duty two-conductor 16-gauge UL-rated and UV-resistant speaker cable for direct burial outside or in-wall installations EXCELLENT SIGNAL TRANSFER: Highly conductive, oxygen-free copper strands provide reliable signal transfer for excellent sound quality over long distances REINFORCED JACKET: UV resistant polypropylene sheath seals out moisture and protects copper strands for long-term dependability DESIGNED FOR PROS: Easy pull snag-free design includes tissue-wrapped conductors for quick stripping and large payout hole allows fast and smooth pulls HASSLE-FREE CABLE RUNS: Our heavy-duty spools allow you to run the speaker wire hassle free without tangling up Built for large commercial and residential installations, our Professional OSD speaker cable is designed for pros who want to provide customers with the best quality audio and get the job done quickly and efficiently. Rated for both in-wall and direct burial use, this two-conductor high strand count copper cable provides excellent signal transfer for installations where background music is needed, and the 16-gauge thickness is ideal for long wire runs (over 50 ft) and low-impedance speakers. The reinforced but flexible polypropylene jacket is UV resistant and protects the copper conductors from high heat and cold conditions as well as dirt, dust, and other elements that can degrade cable integrity.