OG Spherical Square Stack Pack - 5Our OG Spherical Square Stack Pack is perfect for making large serving bowls, colanders, and more! The OG Spherical Square Stack Pack consists of five individual OG Spherical Square Forms, which allows for a wide range of depths. The OG Spherical Square Stack Pack includes: (1) OG Spherical Square 5" (1) OG Spherical Square 6. 5" (1) OG Spherical Square 8" (1) OG Spherical Square 9. 5" (1) OG Spherical Square 11" Clay should be left on the OG Forms