4 Different sizes(LWH) 25 x 25 x 8 mm, 50 x 50 x 8 mm, 76 x 76 x 8 mm, 100 x 100 x 8 mm, 4 blocks are in 4 different sizes, can meet your needs for applying different stamps; Quantity: 4 pieces Easy grip design The curved edges of the acrylic blocks are to fit your fingers tightly for easy grip, and blocks with rounded corners will provide you with a comfortable and safe grip Acrylic blocks Made of clear acrylic material, these blocks are easy to clean with water and towel, you shall clean them before every application for better experience in using Convenient to use There are grids on the clear block, each grid measures 1 x 1 cm, and clear stamps block with grids can help with positioning the image of your stamps Multi usage Clear acrylic blocks are good for stamping craft projects like notebook, journal, cards, invitations, scrapbook pages, stamps, schedule book, clipboard, planners, etc.