This is a brand new 16 gauge (1.2mm) high quality mirror finish surgical stainless steel externally threaded flatback stud, sometimes referred to as a labret barbell. Choose your length and ball size in the options above. If you want a ball size that's not listed, contact me and we can probably work something out. The disc size is 5mm in diameter and .8mm thick. By purchasing these items, you agree that you are 18 years of age or older and will not hold us responsible for self-piercing or aftercare. You are responsible for checking laws in your location regarding these items. These products are discreetly shipped in plain envelopes whenever possible, but international orders must be labeled on customs forms. Thanks for bidding, and please come again. Support small businesses!If you plan to take advantage of any applicable eBay sale offers, all items must be in your cart (as per ebay's rule) before checkout and ebay will deduct the offer amount before you pay. You cannot buy one item and send a note at checkout telling me what you want for free.