Our scrapbook standard tools kit make bookbinding easier than ever, the kit includes 5 different tools that will allow fast, easy, accurate and consistent bookbinding. The set is flexible allowing the creation of albums and bindings up to 8 in high. The kit includes: - "L" long Rule 15 mm width - "L" short Rule 15 mm width - "T" Rule 5 mm width - "l" Rule 5mm width - Corner miter tool 3 mm Use the "L" rules to mark the paper used to decorate the covers of your bookbinding, the "T" and "l" rules will let you space chipboard to create the "hinge" between front and back covers and spine, lastly, use our Miter tool to cut the perfect corners and line your covers with the paper of your choice. Our kit works fine for most materials, but it is best if chipboard around 2mm (3/32 in) thickness is used along with standard papers. 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 sources of heat. DESIGN Every tool is designed, manufactured and tested by the Crafty Shop by Sache team.