LION slide-n-rub retractable pen style eraser is perfect for the school, home and office. This unique Mechanical eraser with its rectangular shape is ideal for erasing small areas using the corners of the eraser. White plastic eraser is gentle on the paper and will erase cleanly with minimal mess and no smearing or crumbling. This pen shaped eraser is easy to control over what you erase and fits perfectly into your pen case. Simply click and move the Red slider along the side to advance and retract the eraser. This slide-out eraser features an Auto-Lock system to prevent the eraser from being pushed back to the barrel while using. A great school eraser for children and students of all ages. Practical and economical refillable eraser for heavy Pencil users. Refill erasers are available in a pack of 2. Made in Taiwan.