Derwent USB rechargeable eraser & 20 eraser refills

USB rechargeable eraser comes with a built-in 500mAh lithium-ion battery which is recharged by USB for convenience and long lasting charge. No need to change batteries.
Includes a USB charging lead and 20 erasers refills, (10 large erasers 5mm & 10 extra fine eraser 2.4mm diameter).