I bought wirefy heat shrink butt splices and misc other connectors for compatibility. Connected several 16 gauge wires. Used the 16-21 gauge butt splices and the jaws for heat shrink butt splices. 30% of them failed and had to redone. Had to crimp each connection twice (double the length of the crimp). Have a low cost wire stripper that can crimp the basic 3 sizes and rarely has a pull out failure. Wanted a tool designed specifically for heat shrink, insulated connectors... to insure no tears in the coating. Hopefully the performance will improve. Could’ve bought a lot of heat shrink tubing and none insulated connectors and stayed with my old crimper otherwise.

The Wirefy Crimping Tool Set is the perfect crimping tool. I have a drawer full of cheaper and lesser crimping tools and there is no comparison. The Wirefy crimper is effortless and with the interchangeable Dies you can crimp every conceivable type of connector. I am replacing all; my other crimpers with this one tool that is so well made it can last a lifetime. Buy It! You won't be sorry.

Nice to upgrade my crumpets with a full set that is easily upgraded by adding individual dies later on.

Simply nice to have what I need. When I need it.

Read the reviews and liked what I saw, said it could be deliver on Thursday and I needed it for the weekend so I put my order in on Tuesday. No shipping update by Thursday so I waited till Friday morning to email them. Within a few hours of sending a email I got and email saying it shipped. Delivered 4 days after they said it would