15FT Grow Lamp Extension Core 16-Gauge S-Plug Cable [UL-Listed] for 250, 400, 600, 1000 HPS/MH/DE Grow Light Ballast/Reflectors 15 ft Lamp Extension Cord to Ballast w/ S Plug Works great with HPS/MH and DE Digital Ballasts Length: 15 ft Gauge: 16 AWG UL Listed