Tombow Knock Eraser Refill

Pack of four eraser refills for the Tombow Mono Knock 3.8 Knock Style Eraser.
Stubby erasers are just no fun when you can have it in a pen like form. With the push of a button you can extend the Tombow Mono eraser for another round of high quality eraser use. Measures only 3.8 mm in diameter for comfortable precision.