... , Awabi, Akoya, Agoya, Banana, Black/Brown/White Mother of Pearl (MOP), Mussel, Paua, River, Trocas, Trocas, TrochusButtons StylesHoles, Self-shank, Brass ... .5mm to 4.5mm thick; self-shank trocas or white MOP shell buttons, the thickness may reach 7.0mm thick;ShapesRound ... .8100#63.528#17.78280#409#380#408# lovely buckles for kids,new design button,pearl white buttons ...