Feature: 1. Bookbinding Work: This book cover guide will help you in your bookbinding work, from cutting the corners to positioning the cardboard correctly. 2. High Accuracy: This book cover guide tool is designed with precise scale and holes, perfect size can help handcrafters solve the size problem of covers or cards. 3. Wide Application: This bookbinding ruler is suitable for notebooks, photo albums, sketch books, homework books, diary books, party and wedding gift packaging, dessert shop packaging, label paper production and other handicraft production. 4. Durable Material: This bookbinding cover tool is made of premium metal material, strong and durable, not easy to break, suitable for you to use for a very long time. 5. Simple Style: This metal bookbinding cover tool is simple, ideal for kids, students, parents, DIY lover, suitable for various paper crafting, card making, scrapbook projects, party decor, framed art and more. Specification: Item Type: Book Cover Guide Material: Metal Function: Size Measuring, Position Marking, Paper Gaps Adjustment, Round Corner Production Target People: Handcraft Makers, Handicraft Lovers, Suitable for Photo Albums, Book Albums, Paper Handicraft Production. Package List: 1 x Book Cover Guide