Callas Disposable Eyelash Extension Glue Holder / Ring Size and Package Quantity: The diameter of glue ring cups is 1.7cm X 2.5cm. 100pcs/ pack glue rings for eyelash extensions in each package. A quantity of 100 is enough to use for a long time without buying more. Eco-Friendly Material: The glue ring cups are made of high-quality plastic material, which is firm, durable, odorless, and harmless. Adjustable: The glue ring cups are soft, adjustable, open-ended, fit for most fingers, and convenient to use. Easy to Use: Disposable for quick use, no mess to clean up, which greatly improves your work efficiency and makes the eyelash application much easier.