Check the listing for details. Ortho Braces Removal Hook with Bite Glue Two-In-One Retainer Invisible Extractor. Condition: New. Listed at 4.99 USD. The glue is combined with the extractor for easy cleaning. Suitable for: People who wear invisible braces during orthodontic. Hygiene: The hygienic removal process can be done without fingerpicking, thus protecting nails, nails and nails and reducing finger strain.