IWISS Ratchet Wire Crimping Tool Set AWG20-2

I purchased this kit to help with connectors for speaker terminals and waterproof boat wiring connectors. Overall the tool feels sturdy but it can be a bit awkward to handle due to the ratcheting feature. Like any other specialty tool it takes some time to get the feel and functionality of it. I do wish the tool jaws were marked / labeled to coincide with the directions but I guess that’s just a learning curve in how to use the tool efficiently.

Buena calidad y muy funcional!

Macht was sie soll, alles gut

Amazing tool. I love the interchangeable heads. So often my wrist starts hurting after crimping wires but this tool makes it effortless with the ratcheting. Would definitely buy again.

My only regret is that I didn’t buy this set sooner.

At my workplace I had to constantly borrow tools in order to crimp Delphi weatherpack/metripack style terminals, and the crimp tools that I used were extremely basic non-ratcheting types. This made it fairly time consuming to crimp terminals because I had to essentially hold the wire and the terminal together while positioning the tool and crimping it. I finally caved and bought this set.

To say that it made my life easier is an understatement. The ratchet action and big handles makes it trivial to get a proper crimp- simply place the terminal and ratchet until it holds the terminal in place, slip the wire through and then squeeze the handles. You get a proper crimp that is positioned where you want it when the jaws release, and it places no additional stress on your hands.

The wire strippers are very decent. Chunky handles, a light spring and sharp edge makes it fairly easy to strip insulation, and the lock is pretty handy for storage.

Keep in mind that the A03BC jaw set works for the terminal to wire connection on Delphi metripack/weatherpack connectors, however there is no specific jaw for ‘crimping’ the rubber seal at the end of the terminal (which requires a perfectly round crimp jaw). The picture shows just the wire interface crimped with the seal uncrimped. I found the A10 10AWG hole to work well enough however. I have not tested any of the other crimp jaws but will update this review if required.

Overall, I highly recommend this tool. It feels like a quality piece for something so inexpensive, and it actually made the experience of wiring actually fun and relaxing.

EDIT 8/10/2017: I used this crimper with the cheap red/blue/yellow terminals. Usually these things are junk because they never crimp properly- and I think most people simply solder them. However, I crimped them with this today using the A30J jaws and the results were fantastic. While this doesn’t make the square imprint that specialty crimpers would have, the crimp was strong enough that I couldn’t pull the wire back out; the plastic insulation was also shaped so that the end ‘cupped’ the wire properly. If anything, this was even more impressive than the Metripack crimps I did earlier.

work great