Amazon.com: 3 Pack AC Flat Wall Outlet Extender Flat Plug Adapter Outlet, Fold-Able 3 Way Wall Adapter Mani Plug for Home and Travel (White) : Tools & Home Improvement
7-Way Round to 4-Way Flat Pin Adapter For Trailer Tow Hitch & Redline Tailgate LED – OPT7 Lighting Inc
603PW/77S --- 6-Way Round to 7-Way Flat Pin Adapter
Hot sale US 2 Flat Pin AC Electric Power Male Plug Female Socket Outlet Adapter Wire - AliExpress