< Purchase Notes > 1. There are many styles of ear plugs in my store. 2. You can visit my store by click the "Visit Store" button in my "STORE RATING" page. -------------------------------------------------------------------- < Product Detail > Material: Titanium steel Style: Screw-fix Size Millimeter/Gauge/Inch : 2mm/12G,3mm/8G,4mm/6G/5/32",5mm/4G/13/64",6mm/2G/1/4", 8mm/0G/5/16", 10mm/00G/3/8", 12mm/1/2", 14mm/9/16", 16mm/5/8", 18mm/3/4", 20mm/13/16", 22mm/7/8", 25mm/1" Color: Multicolor, Blue, Golden, Silver Package: 2 Pcs