Clocks are timeless and will definitely look intriguing on your next project. The Tick Tock Clear Acrylic Stamp Set is made of clear photopolymer and will adhere to any acrylic block (sold separately). Included in this set by Paper Smooches are 4 main images, 5 sentiments, and 11 supporting images. The approximate sizes of the stamps are: wrist watch (7/8 x 3), round clock (1 1/2 ), alarm clock (2 x 3/4), and clock with face (1 1/4 x 1 1/4).