Review on Triplett Splitter Receptacle Indicators ET200 by Sam Faucher

I have a small and a large KAIWEETS ammeter, both fit very easily in 1X hole on triplet inline splitters and socket testers. I don't understand the other reviewer stating the problem. It's convenient to have both tools in one. Robust construction. I don't want to open it to check the quality of the connection, but the connector seems to work. Is working.