Euroblock connector pairing key

This is a printed version of a connector key for 5mm Euroblock terminals. Though it is a useful part, I thought it was worthy of sharing as a printer exercise because it's so simple and fast, but printing needs to be very good for it to work. A bad first layer or dimensional problem with its trapezoidal walls will cause it not to fit. I felt really victorious when my first one fit in the connector perfectly and stayed there!