This little amazing eraser is beyond nice. It is a neccessity. Do you ever need to get into a tiny spot on your drawing to clean it up and your eraser is too big so it erases too much or it is just too clumsy to control properly for tight spots? This eraser can get into any tiny spot, clean it up smudge-free like you never drew there at all. It performs beautifuly. As for it's design, this eraser feels like a nicer mechanical pencil in your hand and while you can erase for quite some time before it runs out, it is refillable which saves on our environmental waste.