I just got this EZzzy-Jig ($14), which comes with 12mm and 15mm attached buckles to plug your own buckles and cord into, as well as an adjustable ruler on its side to help you make the exact length you want. If you’ve made these bracelets before, the instructions for the jig should make perfect sense. But if you’re a newbie like me, you might also want to check out Beadaholique’s How to Use the EZzzy-Jig Bracelet Maker on YouTube. The instructions that come with the Paracord Planet cord (which you will need since the jig does not come with any cords or buckles) will get you started on a basic cobra braided bracelet. Once you get the hang of it you’ll be able to whip one of these bracelets up in 10 minutes flat.