kr = 4.8mm / eu 4mm
https://www.worldstandards.eu/electricity/plugs-and-sockets/
Plug & socket types
Plug & socket types around the world There are currently 15 types of domestic electrical outlet plugs in use worldwide, each of which has been assigned a letter by the US Department of Commerce International Trade Administration (ITA), starting with A and
www.worldstandards.eu
https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets
AC power plugs and sockets - Wikipedia
From Wikipedia, the free encyclopedia Connector used to connect to mains power AC power plugs and sockets connect devices to mains electricity to supply them with electrical power. A plug is the connector attached to an electrically-operated device, often
en.wikipedia.org