Heddles come in a variety of sizes called dents to allow you to control of number of ends per inch in your project. The standard heddle with each Kromski loom is 8-dent. Also available are 5, 8, 10 and 12-dent heddles. As you expand your weaving interests, you may want to have more than one heddle size.
The heddles up to 24" have the nice curved bow top design. The 32" is a flat top.
For creating interesting variations you should have look at the weavers choice heddles
Additionally, you may want to try using 2 heddles of the same dent size as the same time. This will allow you to approximate a 4-harness loom. The process is not as easy as a true 4-harness loom, but for the occasional need, this is a nice option. If you are interested in doing this, order an extra set of heddle blocks to support the extra heddle.