math roller stamp Our product is a kids Math Stamp, made of premium material, sturdy and practical, which can be safe and durable to use. This multiplication and division Math Roller Stamp is small and exquisite, can be reused many times with ink, the seal is clear, and it will not fade after drying. math scroll stamp, roller digital teaching stamp -Color:Assorted Color -Material:Plastic -Size:4.80X4.50X3.00cm/1.89X1.77X1.18in math stamp, digital teaching stamp The Math Stamp is made of plastic material, which can be safe, and can be used for a long time. This math stamp, which is made of premium material, is simple to use and speeds up the efficiency of pressing. Roll the stamp at a constant speed on the white paper, and the math problems will appear in front of you. Clear printing and no fading, math problems can be easily changed by turning the wheel. This math stamp is small and exquisite, can be reused many times with ink, the seal is clear, and it will not fade after drying. packageList 4 x Sets of Math Stamps