These all are Grey ChipboardPapericious Chippis are made from Premium 1.4mm Chipboard. All intricate Chippis are cut from high quality Korean Laser Machines. With help of cutting knife, you can use the cut the requisite portion of Papericious Chippis and use it in your project. Papericious Chippis are best for Gesso, Primer, Spray paint and all Mix media activities.