These circle stud blanks are perfect for making your own earrings, all you need to supply is the stud posts. These circle blanks measure approximately 14mm in diameter. This pack of 10 will make 5 pairs of earrings. Solid Colours and Glitter Acrylic comes with protective paper on both sides which needs to be removed before use. Mirror Acrylic comes with protective paper/plastic (which needs to be removed before use) one one side and the other side is grey or white which cannot be removed.