Stock up your studio with limited edition Odyssey lamp hardware. Odyssey supplies everything you need to finish your Tiffany lamp reproduction. Odyssey lamp hardware is designed for heavy lampshades. The wheel fitting is designed to prevent the shade from rocking or tipping. The cap is vented to prevent heat build-up inside the shade. Solder the circular brass rim to the bottom edge of the lamp for reinforcement, and a perfectly finished appearance. Only while supplies last. Rings are designed to work with Odyssey Lamp Systems.  Ring measurements: Inner Diameter 4.312" Outer Diameter: 5.062"