Features: 1.Material: Metal(zinc alloy) 2.Fashion,shiny,smooth,beautiful,exquisite workmanship 3.Good plating,smooth buttonhole,fine grinding,trimmed,lighten,good hole,no burr,no cut. 4.Size: 12mm,15mm,18mm,20mm,23mm,25mm; Packing Included: Total 36pcs Buttons.each size 6pcs