... :resin 2) Design: many different shapes and designs for you to choose 3) Color: natural color many can ... River, Trocas, Trocas, TrochusButtons StylesHoles, Self-shank, Brass eyelets, Laser logosProduction ProcessSelecting, Embryo Extracting, Grinding, Perforating, Bleaching, Gloss, Quality ... Or Custom-Made;Holes0hole, 1hole, 2holes, 3holes, 4holes; for bigger sizes, 6holes or 9holes; holes may be round ...