Our Scrapbooking tools make bookbinding easier, we offer 4 different sizes of Miter tools to be used on different cover materials: - Corner miter tool 2mm to use paper and thin chipboard (less than 2mm or 3/32in) - Corner miter tool 3 mm to use paper and standard chipboard (2mm or 3/32in) - Corner miter tool 4mm to use fabric leather on standard chipboard (2mm or 3/32in) - Corner miter tool 5 mm to use fabric leather or paper on tick chipboard (more than 2mm or 3/32 in) - Corner miter tool 10mm to use fiber fill We also offer them as a kit that includes the 3mm, 5mm and 10mm, perfect for almos any applications and almost all common sizes of chipboard and decorating paper available. MATERIAL All of our tools are 3D printed with food safe PLA (Polylactic acid) made from corn starch. CARE Do not wash in the dishwasher. Do not soak. Use cool or wet cloth to clean. The tools will deform or melt if exposed to excessive heat. NOTE: Be careful with your PLA tools because them can get damaged if not stored properly, keep the tool away of source of heat. Choose the appropriate dimension of your tool depending on the width of the chipboard used. The tool won't hold chipboard width different of the one specified in the tool COLOR The color may look different in the pictures. DESIGN Every tool is designed, manufactured and tested by the Crafty Shop by Sache Team.