Qibaok Crimping Tool Kit Ratcheting Crimper with 1550PCS 2.54mm Dupont Connectors and 760pcs 2.54mm JST-XH Connectors for AWG 26-20(0.1-0.5mm²)

Crimps perfectly

I do a lot of prototyping with STM32, AVR and others. I have tried two other "multi-connector" crimpers that do a good job on heavier connectors, but when it comes to the DuPont style neither has worked. Because the jaws are too thick, they distort or crush the connectors. And I've had a LOT of practice trying.This one does not crush or distort anything -- because the jaws are much thinner than my other ones. It simply worked on the first try. Now to be fair, beginners who have not crushed and destroyed as many connectors as I have might need a little practice. For me, from the first crimp everything worked perfectly.If you do arduino/raspberry/etc and use DuPont-style connections, this is the one to get. But note that it only fits two sizes, unlike one of my other kits which destroys DuPonts but does a ton of other crimps.Thanks to the great success I've had with this tool in the last day, I'm considering milling down the replaceable jaws on one of my other tools to see if I can make that one functional.

The ratcheting mechanism is a little janky, but this makes much better crimps than other budget options I have tried.

It took a bit of learning how to use the crimping tool but quickly picked a method of use to make life easy for me.Here is what I do, keeping in mind I've only used the Dupont connectors. On the connectors are some points, two near the back and two more a bit further up, with those facing up it into the valley portion of the crimp tool. Carefully squeeze the down 2 clicks, this should put just enough pressure to hold the connector in place allowing you to insert the wire. Make sure the exposed portion of the wire is not too far forward. The back pins clamp down on the insulated part of the wire while the other grab the wire itself. Once you're satisfied with your alignment, and making sure your fingers and skin is clear of the crimping area, squeeze down all the way and you're down. The hard part is over.As for inserting the connector into the holder, there is a little tab on one side of the connector make sure that side is inline with the hole that's on the holder. Just slide it in all of the way and give it a slight pull back to feel if it's seated. Don't worry if it pulls back a bit, that's normal.I haven't worked with the JST-XH connectors yet.Make sure with Dupont you're using the crimp slot that is furthest back, look at the product images to see which one I mean. I saw someone doing a review of this exact tool on Youtube and they used the other slot. I haven't actually tried to see if it makes much of a difference but it looks like it should.

Crimps hold very well - just takes a little practice. For the price this is a great product!

The Crimp Tool: I've used OEM crimp tools for many years (decades actually). I didn't know what to expect from a generic tool. Much to my surprise, this really works well with one slight issue. I found this works excellent on the DuPont crimps and on Molex 08-50-0114 crimp terminals. For the PST style, it works but takes more practice on figuring out where to align the pin for best crimping, since the head is a bit too wide for this terminal (as is almost every crimp tool I have seen). It might take a little adjusting of the tool setting to get it right but now I hit very close to 100% perfect crimps each time. The handles are very comfortable, and the operation is smooth. It is a robust and well-made tool.As for the Dupont and JST headers, they all worked great with no issues. Both may be generic rather than OEM (I honestly don't know) but they still work fine. I've used hundreds of them so far. The assortments provided were an excellent starting point until you see which sizes you need most. And it is nice to have an assortment for prototypes and the occasional repair.

This product in the 26-20 AWG size that I bought (there are different options on the same page, so all the reviews get lumped together) seems sturdy enough, and works well when used with a little care. I notice two inaccuracies: first, the slim documentation suggests that you should strip "about 4mm" of the wire for insertion into the JST-XH connector. That's very wrong, the specification calls for 2mm, and if you go with longer than that, you'll encroach on the part of the connector where the pin should enter. The second is that the tool is slightly thicker than it should be. The solution here is simple enough; position the connector based on the spring clip that will hold the connector in the plastic rather than the end of the connector that crimps around the insulation. If you do the latter, you'll crush the spring clip and the thing won't hold in the plastic.

I bought this to switch out some connectors on some Stepper Motor cables, and to use for making the JST connectors for my Radio Controlled aircraft and cars. This works well and allows me to control the cable lengths and replace damaged connectors. There is a variety of connectors (some I will never use) but for the $$ spent I'm very satisfied. I strongly suggest you follow the instructions and you will find this tool and the connectors get the job done.