Clear acrylic blocks are used to comfortably hold the Inkadinkado clear stamp pieces. To use, simply peel the flexible clear stamp from it's package and stick it onto the block, (it just clings, no adhesive is necessary). The block's wavy sides and thickness make it easy to grip and firmly stamp. When finished, simply peel off the stamp and return it to the package until next time! Size: 8.125" x 5.5"