These grommets are so easy to work with -- they just snap together! We use them for purses, shower curtains, or really anything you can think of. The large 1-9/16 grommets fit rods up to 1-3/8 in diameter and can sustain up to a heavy-weight drapery fabric. Machine washable. Do not iron, tumble dry, or dry clean. Comes in a package of 8.