After struggling with some RJ45 plugs that I had, I bit the bullet and purchased a bag of these pass-throughs. They make it so much easier to feed the individual wires into (and through) the plug. On my previous plugs, all the holes were on the same line and it was difficult (impossible) to get the 7th and 8th wire in place as they had filled up the width of the plug and there was too much friction. With these plugs however, the offset nature of the holes in the load bar (see image) mean that the 23AWG wires and thicker insulation that I had on my Cat6A cable were able to be easily fed through. In fact, you could even have slightly thicker cables if you wanted. You then push the load bar up towards the end of the wires and make sure the wires are generally pointing straight ahead with about 5mm or so poking out past the load bar. Then push these wires and load bar into the plug itself and keep pushing on the wires so that they come out (pass through!) the head of the plug. It is so much easier than trying to push each wire individually into the end of the RJ45 plug - especially if you have thick'ish wires like I did. Just remember to put the boot on first (if you are using it). You can pull the wires back out of the plug if you haven't crimped it, but the load bar gets stuck and you have to use a new plug anyway.