Westinghouse Brass Finish Clip-On Lamp Adapter 7021900 - The Home Depot
SLIP UNO Adapter Converts your 9" high Lampshade to fit on SLIP UNO Lamp Base (1 7/16" opening) - 6"h - - Amazon.com
I Like That Lamp Clip On Lampshade Adapter (1 Pack), Classic Brass Gold Finish, Includes 1 Light Bulb Clip Shade Adapter, 1 Matching Finial and 2 Silicone Levellers, Fits All Standard Size Bulbs - - Amazon.com
Bridge Lamp Shade Frames
Clip-On Candle Bulb Adapter - Shades of Light
Slip Uno Adapter Harp Converter Lamp Shade Uno Euro Fitter 1 9/16 I.D. – UpgradeLights.com