iCrimp IWS-2820M Mini Micro Open Barrel Crimping Tool, Compatible with 0.08–0.5 mm² Wire, Works on JAM, Molex, Tyco, and JST Terminals and Connectors

Probably not as good as Engineer equivalents, but they're cheaper and are working quite well for me so far with JST XH connectors. Simple to use, no harder than automatic crimpers, and I'm getting perfect crimps every time.

The IWISS is not ratchet based crimping tool but works great once you get the hang of it. You have to crimp the connector twice, once for the wire and once for the insulation and although this might seems a bit of a faff, its actually pretty easy and quick once you get the hang of it. This tool seems to be a clone of a more expensive brand called 'Engineer' from Japan but despite being much cheaper, it works great and also seems very sturdy. This costs a fraction of what a 'branded' ratchet based JST crimping tool would and for a hobbyist its more than sufficient to get the job done.

Good crimper for JST style insects.

I'm using them to facilitate some rather complex guitar wiring. Having never crimped these tiny micro connectors before, I watched a clip of "how to" on Youtube - of which there are several. I found the job to be very fiddly but, with the aid of my big magnifying lamp and a bit of practice, I'm cracking on with them now.

Bought this to crimp on some JST-XH connectors. It’s one of the cheaper ones I could find and has done a great job. The jaws are sturdy and line up well with tight tolerance. So far has crimped them all perfectly.

Were these good once? Because this is a piece of junk - it couldn't make one crimp properly. The person that posted the photos of the jaws under the microscope is spot on - these are badly made and very cheap. They are not cut correctly for a fine crimp and they are not sturdy enough for a bigger crimp.

I purchased this crimper solely for its capacity to crimp the smallest (SSH) terminals. Unfortunately the smallest jaw is not fully formed, rather than having clean curves to 'curl' the terminal wings arround the wire/insulation it has a malformed jaw which crushes rather than curling the wings rendering the finished crimp terminal unusable. I took a lot of tries before I resorted to putting it under a microscope to find the problem. I include 2 photos the first is of the jaws on the IWS and for comparison how they should look in the second (an engineer crimper for comparison) Overall just will not do the smallest size crimps, dissapointing.

Accurate, sound crimps using this tool. Clear instructions included. The spacing between insulator and conductor crimps is different for different types of contacts. This tool is quite versatile because it has six single crimp jaws, which allows the user to choose the spacing. Slower than dual crimp jaws, but more versatile.

Pinza perfetta per stringere contatti per connettori KK e JST, non ha il cricchetto per cui si può facilmente dosare la forza di crimpatura sui vari contatti per non tranciare il conduttore

Cette pince est de bonne qualité et bien fabriquée. Elle nécessite un peu d'entraînement mais une fois maîtrisée, elle offre des sertissages très précis et fiables. La construction est robuste et semble parfaite pour une utilisation régulière (comme amateur en tout cas). Le prix est un peu élevé, mais elle est essentielle pour les amateurs de bricolage et les makers. Je recommande vivement cette pince !

no come back for electric so I believe it,s ok

Works very well

The little hand held crimp pliers work way better than the ratcheting type. Especially if you're doing multiple sizes of wire and crimp connectors. The ratcheting kind are probably good for the standard sizes, but when working with small fittings and wires, it's hard to see what is happened. The ratcheting type require you to have it set up perfectly in the beginning. These handheld versions allow you to crimp just the insulation or just the conductor first, then move on to the other part. They also let you see what you're doing and let you get set up, open, close, open, close, etc. repeatedly vs. requiring it to be perfect from the get go. The other plus is all the different sizes of openings. There are a bunch of sizes that get progressively smaller and you can incrementally crimp tighter and tighter. I thought the ratcheting kind would be the best but I end up using this one way more often.