[About 8mm]

[About 6mm]

[About 10mm]

The eyes are movable parts for stuffed animals.
Comes in a variety of sizes and shapes, so it can be used for a wide range
Round Black Eyes
Adhesive backing

Size: Approx. 0.4 inches (10 mm).
Color Model Number: 4-110 Black
Capacity: 8
Material: Hard vinyl chloride

(From Amazon.co.jp)