I got mine from Dave LeClair a couple of years ago. At that time he only had the one size. It is pretty simple really. I got the 3 different center pins for helping to control the loop diameter, and modified the tool with different holes for the other sizes I use most frequently. As for wire, Dave sent me some piano wire that he uses and it works great! Various sizes of piano wire for different sizes of guides and you are almost there. the last thing that you really need, is a tool that will flatten the feet of the guide after they have been trimmed to length, and of course a dremmel tool for shaping and sharpening the ends of the guide feet so that you get a really good transition of the wrap over the guide feet.