I ended up buying a Derwent electric eraser when I was taking an online art class. It was on the supply list, and I admit, I thought it was a waste of money. Until I started using it. That’s when I discovered just how much better it works than a regular eraser. Watch my review
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Offering precision and speed, this battery operated eraser is just what you need to correct small areas of work quickly.
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BATTERY ERASER DERWENT DE2301931