SnapPlugs: Ear Stretching Plugs Kit - Series 1: 4ga - 0g (5mm - 8mm) 4 gauge (5mm) to 0 gauge (8mm) Built-in "Transition Ramp" 2-3 sizes inbetween traditional gauges Includes 10 Pairs of Stretching Plugs (20 total) Designed to prevent blowouts