7/8" black plastic snap lock binder rings come in white, black or clear colors. They offer an inexpensive and fast binding solution for small books and albums. Plastic book rings are often also used for handing signs and making lightweight swatches for samples. They have a snap-closed feature where one side has a peg and the other has a hole, for a secure closure. But they are still very easy to open and close, so make a great solution for frequent editing.