For Labeling Panels, Blocks, Faceplates, Shelves, Bins, Beams And More, Dymo Permanent Flat Surface Labels Have A Glossy Finish That Leaves Your Work Looking Professional. Constructed Of Polyester Material And Coated With Industrial-Grade Adhesive. Available In Smaller Widths Down To 1/4" (6 Mm) To Fit In Tight Spaces. Durable Dymo Xtl Labels Are Jobsite-Tested And Ul Recognized To Resist Tough Conditions And Wont Smear Or Fade. Built With Industrial-Strength Adhesives, These Labels Stay Stuck. Ul Recognized A S A Component To Ul 969.