Okay, you can bend your resistor leads by hand. No shame in that, we all do it, but this little piece of plastic is perfect for getting the leads bent squarely so they can go easily through the holes in your PCB.

This little guy provides you with an easy and reliable way to get the exact distance between two resistor leads. Ensuring that your board looks neat and it keeps the resistors from sticking too far above the board.

It's one of those tools that you never thought you would needed until you got one.