These are 00 guage tunnels exactly the same style as the ones seen in the picture.THIS IS FOR A SET OF TUNNELS.  These come with two O rings to hold them in place. The material is 316L surgical steel. A PAIR LIKE THIS WOULD GO FOR MORE THAT $30.00 AT ANY STUDIO. THIS AND ALL MY JEWELERY IS NEW AND HAS NEVER BEEN WORN. THE PICTURE DOES NOT DO THIS PIECE JUSTICE. SHIPPING IN A PADDED MAILER.THANKS AND HAPPY BIDDING. 1510