Product details:

7 Inch Fitter on Bottom of Shade for 7 inch Shade Holders and Tripods Hobnail Designed Student Shade with Crimped Top Excellent replacement glass for Antique and Vintage Style Lighting Opal White Glass is the same formula for 100+ years This opal glass hobnail shade with a crimped top is hand blown. It has a 7 inch fitter and measures 6 1/2 inches in height with an 8 1/8 inch bulge.