OG Round 6.5"Our OG Round 6. 5" Form is the perfect size for small plates, trinket dishes, and more! WA2 Compatible Works with any of our Rim Templates measuring 7. 5" or greater Stackable with our OG Round 5" Form, or our OG Round 8" Form Clay should be left on the OG forms until stiff, leather hard. Each OG Form has a 45 degree angle edge, and 3 4" depth. All Forms are measured in inches.