DGZZI 50pcs Blue 5mm Pitch PCB Mount Screw Terminal Block Connector for Arduino (20pcs 2 Pin + 15pcs 3 Pin + 15pcs 4 Pin)

Good quality and all worked upon arrival. Very nice for prototyping and soldering to boards.

Bought these for the ender 3 pro. Even though I just needed the 2 terminal block, this was too good of a deal to pass up. The power con was fried from the factory due to arcing and these worked perfectly. I de-soldered the old and in with the new. Been perfect since.

...don't rely on the item picture. The picture shows 25 2 pin terminal blocks. The item name, or title, says "20pcs 2 pin". What you get is 20 pcs of the 2 pin terminal block, not 25. Also, like someone else mentioned, the pins are a bit thick. Not a problem if I were designing my own pcbs, I could just design the pad/hole with the proper dimensions to fit the pins. But if you're using a pad-per-hole boards, you might run into a problem. The pins wouldn't go through the holes of the pad-per-hole boards that I tried them in. I had to file the pins down a bit to get them to go in. Still, for the price, it's not too bad.

It seems hard to mess these up and they didn't. Works as advertised.

nice part fast service

I needed some terminal blocks quickly and, well, Prime is quick so I went with these. I'd say there probably the lowest quality that I've used. The screw heads don't take a Phillips driver very well, the plastic housing has way more flex than more quality parts. And even thought they're supposedly rated for 16A, good luck getting anywhere near that size conductor into them. I'm not planning on keeping the rest of them.

Easy to install

The spacing between pins is larger than the slots on the Arduino uno. When you install these on an Arduino uno. Starting with pin #1 on the board, #2 is skipped, next one goes in #3, #4 is skipped. This are good pins, the measurements in the description is correct. But not too useful for installing on the Arduino uno.