Butler GUM Eez-Thru Floss Threaders 7 X 5Pk (35 Total) Braces Orthodontic Clean

Vintage Made in USA Butler GUM Eez-Thru Floss Threaders 7 X 5Pk (35 Total) Braces Orthodontic Clean. From Dentist giveaway/sample. 7 envelope packs of 5 ea for a total of 35 flossers. These are new in packaging. Package is a paper envelope that doesn't have a seal, just folded shut (that is how they were manufactured during this era).