Self Inking Round Stamp is very nice product. Been buying all of their different stamps. I love them! I’m a high school math teacher and this is used to stamp their homework logs. The students love them too! They last a few months (I think).
I’ve never paid that close attn. But I do use them almost every day in 5 classes and they last at least 2-3 months. Solid lines and never any problems.
