This AC WORKS brand 10ft NEMA 6-20 extension cord can be used indoors and outdoors. The cable contains an anti-cold weather jacket that stays flexible in extreme temperatures. It is a NEMA 6-20P straight-blade plug to NEMA 6-15/20R straight T-blade connector with a power indicator light. Included with your purchase is a 5-year limited warranty. NEMA 6-20P to NEMA 6-15/20R NEMA 6-20P, 20 Amp 220 Volt straight-blade male plug NEMA 6-15/20R, 20 Amp 220Volt T-blade female connector with light SJTW 12/3, 20 Amp copper wire with anti-cold weather jacket UL, C-UL listed with 5-year limited warranty CA Residents: Prop 65 Warning(s)