They are All silver 3D Holographic Fishing Lure Eyes 

3MM, 500PCS

4MM, 500PCS

5MM, 500PCS

6MM 310PCS

7MM 310PCS

They are soft molded eyes and all have a self adhesive backing to stick on most surfaces or can be added glue to stick to uneven surfaces.

Picture is not the actual size but  the color.