These baby's rock, I purchased a small number  of these and another product that only requires the conductors be stuck in to the connector.for testing. Boy are these superior to the stab type, these lock the wire in place and I could not pull them out no matter how hard I tried, meanwhile the stab type connector only required a simple twist and tug and the wires come right out. Not something I want to think about on any job with my name on it. Try this type connector, you will like it!