Nora 1" Iolite Round Slot Adjustable BWF Trim NIOB-1RSLCDXBB | BuyRite Electric
Amazon.com: Stainless Steel Small Round Slot Mount Glass Clamp for 1/4"~5/16" Glass Thickness, for 1-5/8" or 1-1/2" Round Tube with Gaskets, No-Drilling, 4-Pack, Satin Finish : Tools & Home Improvement