`Schuko` oː is the colloquial name for a system of AC power plugs and sockets that is defined as `CEE 7/4`. A Schuko plug features two round pins of 4.8 mm diameter (19 mm long, centers 19 mm apart) for the line and neutral contacts, plus two flat contact areas on the top and bottom side of the plug for protective earth (ground). Schuko socke...