For different sizes of buttons and eyelet, the size of the selected mold is also different. Our molds are available in sizes from 3mm to 20mm. Applicable to the snap fastener, rivet, eyelet, etc. Optional Model: 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 17mm, 20mm.