You will receive 40 pieces of hardboard cork coasters. This quantity is sufficient for various DIY crafting needs. These sublimation cork coasters are made of cork backing and MDF material. Each coaster measures approximately 4 x 4 inches (10.2 x 10.2 cm) with a thickness of about 0.16 inches (4 mm). The blank hardboard coasters are compatible with sublimation ink, sublimation paper, and heat press machines. For best results, apply heat at 355375F (180190C) for 6070 seconds. Remove the transparent protective film before use. These MDF sublimation coasters are ideal for personalized crafting projects. Use your creativity to print meaningful designs, patterns, text, family photos, pet images, or scenic views onto the coasters. They make thoughtful handmade gifts for loved ones, friends, family, or yourself. These sublimation coaster blanks are not only suitable for crafting but also functional for everyday use. Place them under coffee mugs, tea cups, wine glasses, and bottles in kitchens, living rooms, bedrooms, offices, cafes, and more. Color: White Material: MDF Size: 10 x 10 cm Package Contents: 40 x Sublimation Square Coasters Note: The package includes only the items listed above. Other products are not included. Lighting and monitor settings may cause slight variations in color between the image and the actual item. Measurement may vary by up to 13 cm due to manufacturing tolerances.