C.S. Osborne #44 Wire Eye Combo. 25 Gross. The complete button includes the Wire Eye and the shell of your choice. Available in the following sizes. 16, 18, 20, 22, 24, 28, 30, 36, 40, 45, 50, and 60. Wire Eye #44 has a small eye to prevent fabric damage and pull through in delicate materials.