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Material: Brass Plated
Center Hole: 2-1/8"
Fits most #1 Brass burners
7 inch Glass Shade Holders have a 2-1/8" center ring to fit antique lamp burners. Center ring sits down on burner, fitting snugly inside lamp burner prongs. 3 arms extend to hold 10" student lamp shades in place. Fits many #1 brass burners.
Select according to center ring diameter. To determine appropriate size: measure outside diameter of burner ridge, where chimney sits.