Features:<br> 1.Adjustable numbers, gently scrolling, quick questions, no need to pay high prices for math questions.<br> 2.Rotate and adjust the column type, can adjust 10 different queue methods.<br> 3.Primary school students make one page a day to improve the speed and accuracy of oral arithmetic, cute and practical.<br> 4.The imprint is clear, and it dries and does not fade after printing. Add printing oil, which can be used repeatedly, easy to use and fun.<br> Specification:<br> Name: Mathematics Teaching Roller Seal<br> Color: Pink, Blue<br> Stamp size: 44x30x48mm/1.7*1.2*1.9in<br> Model: Addition, Subtraction<br> Blot: 20x4mm<br> Material: PVC<br> Package Included:<br> 1 * Math Teaching Rolling Seal<br> 1 * Ink<br> Notice:<br> 1.Please understand that color deviation may vary due to different monitor settings.<br> 2.Due to manual measurement, there will be some errors, which are normal.<br> .Items from Sheng Xinshun's shop