Ira Pollitt Pack of 30 Plastic Label Holder Wood Shelf Sign and Ticket Holder Clear Wire Shelf Label Holder 2.36 x 0.98 Inches Clip on Tag Ticket Holders(Paper not Included)

After buying another brand which did not fit my bookshelves, I ordered these. My bookshelves are about 3/4” deep, and these slipped on very easily. I am now in the process of weeding and reorganizing our books. Having labeled shelves helps immensely to group books by subject, making them easier to locate.