Check the listing for details. 1000Pcs Blank Flash Cards for Studying Bookmark Learning-2.8 x 1.5". Condition: New. Listed at 30.32 USD. MULTIPURPOSE - The biggest difference from ordinary notepads is that flash memory cards are more flexible to use. The paper can be disassembled, replaced, and combined at will, which is convenient for the organization. You could also DIY according to your preferences. Flash cards can be used for writing notes, taking memos, drawing, drafting, etc.WHAT YOU GET - The package comes with 1000pcs Message Cards, 10pcs Loose Leaf Binder Rings that measure Ring Size: 2.5 x 32mm / 0.1 x 1.26 inch(T*ID), Card Size: 70 x 40 x 0.28mm / 2.76 inch x 1.57 inch x 0.28mm(L*W*T). RELIABLE MATERIAL - The premium paper is fine and thick, the surface is white and inclusion-free, and the color is uniform. Can be wrote with a variety of pens and dries quickly, such as gel pens, fountain pens, watercolor pens, highlighters, pencils, ballpoint pens, etc.