Check the listing for details. 10 Pcs Orthodontic Lingual Retainer Bonding Splints upper:38#-47#,lower:29#-37#. Condition: New. Listed at 8.54 USD. Feature: Product name: Lingual Retainer Size: upper: 38#-47# lower: 29#-37# Packaging: 10pcs/pack Type: Retainer with markFDA Statement:The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. This item has been cleaned and treated according to the manufacturer\'s instructionsOn Nov-19-19 at 13:28:00 PST, seller added the following information: