TICONN 200PCS AWG 22–18 Heat Shrink Butt Connectors, Insulated Waterproof Electrical Marine Automotive Wire Crimp Terminals, Butt Splice (Red200PCS)

Its perfect for what i need them for

Seriously -as the title says, what's not to love? I have an assortment of types of marine connectors - all with the heat shrink outer insulation that seals to the wire. Perfect for use in wiring trailer lighting. I use these for just about all my connections, though, where I am using a solderless terminal. I usually use heat shrink on those anyway, why not get a two in one combo? For butt splices - this seems to be the size I use the most. The 200 count package is perfect. Hopefully I will not run out quite as quickly this time around. Simple to use, providing you have the right tools to strip the wire and the right crimper to crimp the wire. I have several for both, but my go-to crimper is a ratcheting crimper. The simpler ones work just as well, though. A heat gun to shrink, or you can use a small torch (very carefully - it is easy to scorch the connector, wire, or both - the voice of experience speaking here). I have also been known to use my hot-air soldering station on occasion.

A neat idea flawed by the execution. Once you slide the wire in, you cannot crimp it tight enough to keep it from easily pulling out again. I made nine connections and wasted 15 connectors. However, once I used the heat gun to shrink the covering, the glue on the inside held tight and it worked well.

Love these. Work great. Seals the connection wonderfully.

The heat shrink is good quality. Soft enough to bend before shrunk if needed. They crimp good. They shrink evenly with a torch. They have a decent amount of glue in them so they seal up well. They don't bubble up and burn easily like some of the cheap ones. I work on construction equipment for a dealer so good quality crimp connectors are a must and these fit the bill.