... trocas or white MOP shell buttons, the thickness may reach 7.0mm thick;ShapesRound, Heart, Triangle, Five-Stars, Flowers, Oval, Rectangular, Hexagonal ... , 2holes, 3holes, 4holes; for bigger sizes, 6holes or 9holes; holes may be round or square;Special FeaturesOf Natural Luster, Natural Shining, Environmental and ...