MATERIAL: Made with surgical steel. Surgical steel is the industry standard metal for plugs/tunnels.
MEASUREMENTS: 9 sizes available. Gauge Sizes: 2 gauge(6MM)-25MM. A quick way to measure teardrop shaped plugs is to measure them top to bottom and side to side. Add the numbers up, divide by 2 and you have the gauge size.
WHAT'S INCLUDED: 1 pair of double flared tunnels(2pc) are included with your purchase. Just choose your desired size.