2 Pin 3 Pin PCB Mount Screw Terminal Block Connectors,Socket Strips 5.08mm Pitch for Arduino (Pack of 60pcs)

The set screws seem to be of low quality and easily stripped. They got the job done mounted on the Picaxe project board. Higher quality screw terminals cost quite a bit more. Good enough for the money. The pins lined up properly when several of the terminal were connected together which made it easy to solder to the board. The terminals were easy to connect by sliding together.

They have better screws than most. The connector body has a ridge on one end and a groove on the other to lock them together when you put several end-to-end. Unfortunately, the ridge doesn't fit in the groove, so they won't fit on 5.08mm centers. I managed to get 5 of them soldered on and then had to use a pair of pliers to squeeze them together to get the 6th one in.

I got these with mixed two-pin and three-pin, and sure enough, have used several of each. Another reviewer worried me, saying the screws might strip, or the wires wouldn't hold. But I'm happy and have not had a problem. The pins come out the bottom and are long enough to fit snugly into the solderless breadboard. I do recommend these!

I have these as well as some others I ordered from Sparkfun. These do not hold small wires as well as the Sparkfun ones and are harder to tighten down for some reason. I was hoping they would be the same product but unfortunately they are not. The clamping mechanism on these is slightly different. The pegs on these are also a bit thicker but they still fit in a breadboard and proto board just fine, though maybe with a little more force.

These fit PERFECTLY in my perfboard! no wiggle and sits flat on the board.

These can open surprisingly wide to accept larger-gauge wires. However, when tightening down wires into these, the connectors themselves begin to bend despite being firmly soldered onto the board(s).I have not had one break yet when tightening, and each wire connection I made with these (about 46 connections) is secure and doesn't slip out.

These hold wire a bit better than some others I have. And the attach together on end. Real neat.