Heavy Duty 15 Amp to 20 Amp Plug Adapter: Build with 12AWG SJTW flexible short power extension cable, connect with a 20 amp plug, need you devices support a wide voltage range 110V to 220V to connect with nema 6-15P or nema 6-20P 15A/20A 250V ac power devices. WIDELY COMPATIBLE: Compatible 1: Nema 5-15P 15-AMP Male(125V) to 5-15R 15-AMP/5-20R 20-AMP Male(125V) Female AC adapter; Compatible 2:Nema 5-15P 15-AMP Male(125V) to 6-15R 15-AMP /6-20R 20-AMP Male(250V) Female AC adapter. SAFE and STABLE Transmission Current: PVC rubber protection + SJTW 12AWG pure copper conductor, low heat generation, will not crash, insufficient power supply, and provide a safe connection. Easy to USE: 12AWG Heavy Duty Extender Right-Angle AC Plug Adapter 4-in-1 The size of the adapter from the female plug to the male plug is about 1ft/32cm. It is compact and easy to use. It is convenient for you to carry it in your bag. NOTE: If you connect to a Nema 6-15P or Nema 6-20P 15A/20A 250V A