Approximately 20mm white plated round bezel cups with one loop. 1.5-2mm inner diameter loops. 2-2.5mm deep. These shallow bezels use less filler and shorten curing times! White plate is the "silver" color most often seen on base metal jewelry and components. White plating is also known as "imitation rhodium" and "silvertone". Measurements do not include loops. Size listed is bezel exterior; bezel interior is about 1mm smaller. Plated steel. These work great with EasyCast and other resins, epoxies, glazes, Friendly Plastic®, and polymer clay.