10pc Stainless Steel Metal Blanks Disc Charm 18 Gauge 1mm Hole [Office Product] Quantity: 10 Piece Stainless Steel Pendants, Disc Size: about 16mm(5/8") in diameter, 1mm thick, big hole: 7.8mm(5/16"), small hole: 1mm Stainless steel takes a high polish and has a luster similar to sterling silver. It stays bright and shiny for years of long wear. You can add them to chain, leather cord, satin cord or other thicker stringing materials for necklaces, bracelets, shoe charms, zipper pulls and so on.