Get the precision of Tombow's legendary MONO eraser in a convenient pen-style body with the Tombow Knock Eraser. This mechanical eraser features a comfortable rubber grip and handy clip, making it perfect for detailed corrections on the go. The 3.8mm round eraser tip is ideal for precise work on drawings, sketches, and written notes. PVC and phthalate-free for safe use, with refillable design for long-lasting value.