Snap Button 1.4 PieceCap in brass/Nylon/Alloy/Rubber 2.Different sizes and finishing effect ... to 20mm, and the bottom parts is 14mm2.Material: Cap in brass, alloy, rubber or nylon ( bottom 3 parts ... in brass only ) 3.Styles: Plain, Painted, OEM designs, lasered, epoxy ... provide the goods for Target , Next, and so on. Snap button