The standard size of black plastic eyes for the average size amigurumi is 10mm. Here you get 4 different sizes [6 mm/ 8 mm/ 10 mm/ 12 mm] There are no mixed sizes; you get the size you choose. Each comes with 100 count with matching backings. 

Sizes: 6 mm/8 mm/10 mm/12 mm

Package Dimensions: 15cm x 15cm x 10cm (5.91in x 5.91in x 3.94in)