Feature: 100% New Brand and High Quality! Gauge: 2g(6mm),0g(8mm),00g(10mm),1/2"(12mm),9/16"(14mm),5/8"(16mm),11/16"(18mm),3/4"(20mm),7/8"(22mm),1"(25mm) Diameter: (approx)9mm,11mm,13mm,15mm,17mm,20mm,22mm,24mm,26mm,28mm Height: (approx) 9mm Material: Silicone Package: 2 pieces Buying Tips: BUY 2, GET 4 FREE Promotions--All 6 items must be purchased in one transaction then the discount will be applied. Pls use the "Add to Cart " Button to Select 6 items (the correct color/size you need )one by one , and pay with Paypal then the discount will be shown ,thank you . Pls Note: 25.4 mm=1 inch, 5 carats=1 gram , Due to different production batches of these Plugs Tunnels, the Mold may exist 0-0.5MM difference, looking forward to your kind understand.