Non-Tarnish 304 Stainless Steel Stamping Blank Tag Charms, Manual Polishing, Heart, Stainless Steel ColorSize: about 13mm wide, 12mm long, 2mm thick, hole: 0.8mm.Double Sided Manual Polishing: These pendants are hand-polished, which means that the front and back of the pendants are manually put on the polishing wheel to friction, making it more shiny and smoother, like a mirror.