Package:The Bookbinding Supplies are Constructed from Sturdy Kraft Material. Firm and Strong. Not Easy to Deform or Bend. 25 Sheets Heavy Duty Scrapbooking Chipboard, Each Sheet Measures 8.5 X 11 Inch. 2 mm /0.079” Thick. Enough Quantity for You to Make Your Projects Best Binder Matetial For Making Covers: It Is a Sturdy Cover Material for Your Book, Notebooks, Calendars, Journals, Planners, Money-Budget Saving Plans Binders, Sign in Book, Ideal Load Bearing Capacity to Hold Up Everything Well Voila! Nice, Neat, Prevent Paper Curling Up! Be A Backing Board to Make Paper Flat; Strengthen Hanging File Folders That Hold a Lot of Papers, Stiffen A Flat Letter/Flyer Mailing, Prevent Bending Your Items During from Shipping. Support Pages & Plates for Your Books, and Magazines To Be A Wrap Card For Organizing: Perfect Accessories to Wrap, Organize and Store Multiple Yards of Garment Fabric, and Able to Make Them Stand Vertically. Also, to Organize and Make Your T Shirts Neat for Your Wardrobe Compatible With Tools: The Kraft Heavy Weight Chipboard Sheets Suits to Laser Cut, Glue, Coating, Drawing. Compatible With Cricut Machine to Cut into Different Designs to Make Gift Box, Photo Frames Holders, and Displays 25 Sheets Thick Grey Board