iCrimp IWS-3220M Micro Connector Pin Crimping Tool 0.03-0.52mm² 32-20AWG Ratcheting Crimper for D-Sub,Open Barrel suits Molex,JST,JAE

This is a nicely built crimper. I've used crimpers before but not this particular style. Amazon says, "comes with instructions", but not with my copy so I had to do a little trial and error to get good crimps without crushing the pin insert end of the connector. The numbers on my copy of the crimper differ slightly from the Amazon illustration with the largest being 2.0mm instead of the 1.9mm shown. No biggie. The tool has a good ratchet mechanism which is used to hold the connector in place while the wire end is inserted and then the crimp is finished. Makes great crimps. It's coated with some kind of lubricant which stains so be careful no to lay it on your prize tablecloth when taking it out of the protective plastic bag. Wiping it down doesn't help because there's more lubricant in the bag so it's coated again the next time you remove it. You probably don't want it lubricant free, because this lubricant probably contains a corrosion inhibitor to preserve the tool. Very good tool for the price and works well, but when crimping, be sure to check the insertion distance so the actual connector doesn't get crushed in the process.

I love these things! Such a life saver! Ive used them countless times at this point! Just the right size for anyone into 3d printers! They're accurate, crimp well, and work great once you get the hang of them. I suggest crimping some trash wire just to get a feel for them before you send it and use them on a project.

Finally, a reliable crimper for DuPont pins. Have tried a number of others (including others from this brand) this was the only one that gives me at all consistent results, even with very fine gauge wire. I bought a second one for my field kit. You do need to bend the tabs on the typical pin to parallel, so they fit into the groove. (The generic pins usually have the insulation gripping tabs bent at very shallow angles) Would be helpful: if they labeled the slots (or included a slip of paper that translated from the marked units) with US wire gauges. Also helpful would be an insulation strip length gauge. The very finest slot seems to be for something other than a DuPont pin, but not sure what.

the jig on these are perfect for all different sizes. don't bother with the slim plier looking models of crimpers. with this tool it's one simple squeeze and it crimps the wire and the insulation perfectly. I've bought and returned a few others because every time you try to crimp the insulation wings they fold over in random directions. these things do it straight without any additional pre bending or tinkering at all. Only single complaint is that occasionally the ratchet gets a bit jammed and you need to push a screw driver between the handles and then remember to realign the mechanism.

I have been using this crimper for years now. I believe I ordered this in 2022 if I recall, and I used it again just a few days ago right before 2026. So, annually, almost four years of use. Maybe, there is an accuracy issue. Maybe there are quality control issues. But I am a professional - and use wire crimping tools often. Maybe not this one specifically but I know my crimps. So unless I did something to set the wire incorrectly, I have a 100% success rate with JST-XH and the even smaller JST-PH connectors. This thing just works and I am very happy with this crimper. Because of my personal experience with this tool, this is the one I recommend to hobbyist who need something for their 3D printer JST-XH stepper wires because not only are my results repeatable but it is shockingly cheap for a tool. I work in Aerospace, and when I have Junior technicians / Engineering technicians I always ask one simple question: Do you know how to crimp wires? They always say yes, because it seems a simple task. But there is a small skill gap. You need to know what you are doing on some level or else your simple crimps will be bad. Without fail, every single time, these junior engineers cannot crimp properly - they do not know what they are doing. So when I see reviews stating this tool is bad, inaccurate, doesn't crimp, etc, my personal experience says it is the user and not the tool. Most users do not know how to crimp wires - even if they think they can.

Review of My Crimping Tool Usage Experience: I have been using this crimping tool extensively, and it has consistently delivered excellent results. Performance: The crimps it produces are strong and consistent, meeting my needs perfectly. Pros: • Reliability: It crimps very well every time. • Ease of Use: Simple to operate with minimal effort. Overall: I am very happy with this crimping tool and highly recommend it to anyone looking for a reliable and efficient crimping solution.

I have another pair of standard crimpers for 10-24awg wire that are pretty good but completely unusable for JST/Molex terminals. That tool is heavy and stout so when I got these I was surprised to see how small they were. Like really really small. I was hesitant to use them at first but my first attempt at a kf2510 pin came out FLAWLESS. no adjusting the ratchet strength, no fiddling with placement in the jaws. Just set it in there, squeeze, and you'll get factory crimps every time. considering the pin size of what these crimp it isn't actually that surprising how small they are. If they were any beefier they wouldn't crimp those tiny pins as well as it does. I bounced back and forth between this style that has the working surface perpendicular to the handles (I guess they call it open barrel?) and the normal kind that have the jaws parallel to the handles. I must say I do like this style a lot and for wires/pins that are so small they actually make more sense. They're cheap so you might as well just give them a try.

It arrived on time. Packing was in good shape. The crimper works as advertised. It's a good tool.

na een korte inloopperiode wordt deze ratelkrimptang een handige stuk gereedschap. Een beschrijving van het gebruik van de tang zou handig zijn.

I wasn’t sure what to expect, but it’s better than I hoped. Worth every penny.

Plus petite que je n'imaginais, mais conforme. A l'air solide et précise. A tester en condition réelle.

Köpte den till JST SH men behövde till PicoBlade, visade sig att tången skall passa båda +++

Bought a blue crimper sometime ago and was never successful in crimping connectors without wasting connectors. Especially micro JST connectors, was persistent in trying100connectors and all failed. I almost concluded it is the fault on my part until I bought Iwiss crimper. I was successful with the first try.