This Striped Eraser Pen from Tombow is perfect for precise erasing and is especially useful for creating highlights and light in graphite. It comes with a choice of two refillable eraser sizes, 2.3mm diameter round or 2.5mm x 5mm rectangular. The eraser itself is 50mm in length and can be operated with the push button located at the end of the pen. The eraser is kept contained in the pens metal tube to give the user precision and accuracy. - Brand: Tombow - Eraser pen - Ideal for creating highlights in graphite - Eraser measures 50mm in length - Operated with a push button