Amazon.com: Flexzion ETL Listed 3 Prong to 2 Prong Outlet Adapter, Polarized Ground Plug Adapter 3 to 2 AC Power Two to Three Pin Converter Portable Heat Resistance for Wall Outlets (Orange,
4 Pack Ground Plug Adapter 3 Prong to 2 AC Electrical Outlet Grounding Polarized | eBay
Cleanroom, ESD, Static Control Supplies - Ground Plug Adapter,Desco
Leviton U - Ground Single to Triple Straight or Angle Plug - In Outlet Adapter - 008-00697-00W | Blain's Farm & Fleet