I needed ring connectors so I decided to try this super cheap multipack. Well, you know, the old adage is usually true: you get what you pay for, and if that seems true, then it probably is. I've tried some butt connectors with two different professional crimping tools and even an 8" needle nose pliers. In all cases, crimp connectors can be easily removed from the wire with minimal effort. I got the job done using connectors from my dwindling inventory at the auto parts store, purchased connectors with no problems. Cheap junk!