Mark,
Sorry, I don't have any photographs - I don't a digital camera. But if you really want some, I could impose on some friends to provide me with photos and send to you.
The term "slip them on" was just a figure of speech. The fit is quite tight, just like any electrical connection in a car (which if it were loose it would disengage from its spade terminal at the first bump in the road). The counter prongs are just like an electrical spade terminal. It needs a reasonable amount of push or pull to put it on or take it off. It really works a treat for me.
If you are not familiar with the blue point connectors, they are connectors we use in house wiring in Australia where you join cores of power cables in a plastic junction box. They are "floating" connectors. This connector fills-up most of the spare space between the spokes when the adaptor is installed on the counter.
Let me know if you want any photos.