Wide Application:It can be used for greeting cards,planners,journals,notebooks,photo albums,sketchbooks,workbooks,and is also suitable for papercrafting,card making,scrapbooking projects, party decorations,gift wrapping and other crafts. Quality and Size:There are 2 sets of white scrapbooking tools,2pcs/set,size is about 105mm wide, 200mm long, 3mm thick, hole: 5mm, slot: 51-77x4mm.Choose the right size to help you with the size of your cover or card. Material:This book cover guide is made of acrylic material, smooth and comfortable surface, sturdy and durable, not easy to break or deform, can be used for a long time, it is your DIY production. Easy to Use:Book binding rulers can be used as rulers, spacing guides, corner cutting squares and hole locators. Whether you are a beginner or a professional, this tool makes it easy to create book covers. Precise Measurements:The DIY Positioning Ruler has precise transfer scales to ensure accurate measurements and seamless cuts. Maximise your crafting convenience for an effortless crafting experience!