Safety plug caps - Types A,B,C,E,F,G

Have you ever feard while working on an electric device you or someone else could accidentially plug it in and cause a dangerous short?

I don't know if you have, but I did. These simple plug caps can easily been put on the pins of plugs of Type A,B,C,E,F,G, preventing them from being plugged in.

Never confuse the plug of the device you are working with the plug of some tool you need again. Add safety to your life.