Kapco Vinyl Label Protectors, Round, 1-1/2 x 4 Inches, Clear, Pack of 500 Kapco Adhesive Products Clear 4 mil Vinyl Label Protector features rounded corner design that prevents lifting from book's surface. Non-glare label with acrylic adhesive backing protects bar codes from damage allowing accurate scanning. Protector complies book spines and gutters and sold as 500 labels per roll. Measures 1-1/2 x 4 inches. Designed to fit book spines and gutters Non-glare label with acrylic adhesive backing protects bar codes from damage Extremely durable and will not deteriorate with age Ideal for books in the classroom, library at school or for the home and office