These hangers have two "grippers" which clip on to the pot rims. These hangers are strong enough to safely hang clay pots, and will work with any pots that have a lip to clip the hanger on to.
We recommend using these if you plan to hang a terracotta pot. They work equally well with any plastic pot that has a rim to grab on to, or you may prefer our Double Hanger for Plastic Pots which can be adopted for a wider variety of plastic pots styles.