Description:Rotate and adjust column types, you can adjust 10 different queue sides. , you can quickly prepare math problems for your child at home. You can quickly complete the quiz simply by scrolling through the math questions.This Roller Digital Teaching Stamp is small and exquisite, it can be reused many times by adding ink, the stamp is clear, and it will not fade after drying.Features:Material: ABS, PVCSize: 5*3*8cm /1.97*1.18*3.15inInk size: 2.5*0.8cm/0.98*0.31inUses: Teaching, tutoring, learningList:Addition Roller Stamp*1 Ink*1orSubtraction Roller Stamp*1 Ink*1orMultiplication Roller Stamp*1 Ink*1orDivide Roller Stamp*1 Ink*1
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