Great Size Selection: These safety eyes come with the following dimensions: safety eyes 30mm, 24mm, 20mm, 18mm, 16mm, 12mm 10 each; safety noses 26mm, 20mm, 15mm 10 each, the variety makes it easy to find the perfect size. Enough quantity and assorted sizes to meet your different DIY needs. High Quality Safety Eyes and Noses: These safety eyes are smooth to the touch (no rough edges) and easy to install, all you need to do is thread the eye or nose through your crochet project and snap on the suitable backings. Safety eyes come in individual bags with matching plastic washers (two sizes of washers fit all eyes, noses), don't worry about scratching the surface of the safety eyes. The Plastic Backings Fit Well with the Safety Eyes: The backing is available in 2 sizes for 12-30mm safety eyes and noses, the 2 sizes add up to a total of 90, and the extra backings are included in the package. These safety eyes for stuffed animals have a threaded design and are very secure when installed without worrying about the backing and black safety eyes separating over time. When you fasten the safety eyes and the backing securely, the safety eyes will stay in place.