XREXS Electric Eraser Kit with 22 Eraser Refills in 2 Sizes ($7.99 on Amazon)

XRXES Electric Eraser Kit for $7.99 with coupon code REXS5YQ5. Also works for the white version .

• Uses batteries (2 AAA batteries included)
• Comes with 22 refills which are in 2 different sizes