The overlooked one will flatten more, 2549 provides a more rounded crimp. If there is a minimal chance that you need to crimp the duponts, definitely take SN-2549, and possibly pair it with the above SN-48B. Summarizing: I don’t know if this particular crimper is worth recommending. Does it make sense?

You can clearly see the difference in the photo. on top – a "large" car terminal, on the bottom – a "small" one, for which this crimper is intended. This crimper is NOT for duponts and other radio engineering small things (they need 2549)! It is for small automotive terminals, including those for a wire section of 0.25mm2, which is how it differs from 28B / 48B. Well, or SN-28B with an added size of 1.5mm2 😉 Overall, I rate the result as a four. I bought this crimper mainly for the sake of review, because in principle I have already closed the issue of crimping almost any terminals. If such wires are not expected, well, perhaps the SN-48B presses better, although it costs less and looks worse. And the ideal and universal crimper for all occasions – alas, is not As you can see, the shape of the https://jiji.com.et/cell-phones-tablets-accessories/vivo matrices is different. I was surprised that he strangely bends his mustache to the insulation at a size of 1.0mm2 – not just wraps, but bends slightly forward.
And maybe you need to "work in". It’s similar to the SN2549 I recently reviewed, but this one is designed for larger terminals like car lira etc. and is basically the same as the SN-48B but with an added 0.25mm2. Looking at the photos of the seller, I mistakenly thought that these matrices were made according to the same principle as the SN2549, but alas, the casting is quite good, though.
At the same time, the monitored one, of course, has the right to life, it is made very high quality, it compresses quite adequately, and visible defects can disappear as they are “grinded”. Comparable to 2549. And it is possible and immediately a “big” crimper, which, although with difficulty, will also allow small terminals to be crimped. Let’s just say, if you crimp ONLY automotive – yes, it makes sense, provided that very thin wires, less than 0.5mm2, can also come across. Matrices

Viewed from below The terminals go in like this: The reference one has already crimped more than one hundred, and I don’t even remember how he crimped at first. I am also going to order such a crimper, so, I think, wait for the review by July 😉

Crimper (swaging) SN-28BS.
Below is an example of crimping a “large” 6.3mm automotive terminal with this crimper – it is crimped incorrectly, because the width of the “whiskers” is greater than the width of the crimper matrix.
Either I didn’t guess with the wire cross-section and the size of the terminal, or there is some strange matrix defect – and this is more likely, because the “reference” crimper presses the same terminals on the same wires in the same position in the matrix normally. Well, they are crimped like this:
Immediately once again about what terminals it is intended for.