Four colors in one! This pad enables you to quickly stamp out 4 colors of each stamp, aiding you and your students in counting, sorting, grouping, connecting or comparing. These stamps can also be used with manipulatives to record solutions and extend manipulative activities. Also use to grade papers or for student activities. Details:Primary colors (red, green, yellow, and blue)Each color measures 3" x 1.5"4 colors per padNon-toxicChild-safePlastic