IDEAL Electrical 86-955 IDC UY2 Butt Splice Jellybean Connector, 3 Wire Butt Connectors for 19-26 AWG Solid Copper Single-Conductor Wire, Yellow, (100 Pack)

My use case is for short term usage for temporary wiring so I don’t know the longevity but every spice I have made worked without issue. Make sure you use the right size and type of wire. For the version with gel sealant in them, don’t store them in a hot garage or shed or they will get oily an gooey over time from the sealant.

These connectors are great.

Works as it should

Used them to connect some wires in my car and they seem to hold up. Much easier than soldering.

Works like it should. Good deal for the price, as far as quantity.

Used these when I swapped out solar panels on my garden lights. The wire was so thin, there was no way to strip it for soldering without taking all the wire with it. No need to strip, and solder with these connectors, just cut and crimp….work great.

Easy to use. Works as advertised.