Derwent Battery Operated Eraser / Refills

A good eraser for pencil and paper work but if you need to use is on canvas or board for different techniques it lacks the torque power needed. Also any pressure on the eraser pushes it into the metal grip so keeping having to adjust is irritating. A wider, longer eraser with a better metal grip and a motor that had some decent grunt would be an improvement

I didn't know how much I needed an electric eraser until I got this one. I love how it takes off coloured pencil. I found it a little bulky in the hand, but I got used to it fairly quickly. If this one suddenly vanished, I would absolutely buy another.