Tombow's erasers are perfect erasers to have in a pencil case and are really good when precision is required when you want to erase pencils precisely. Rubber from Faber-Castell is good for correcting and adjusting pencils, charcoal, etc. MONO Air4 is a small flexible correction roller from Tombow. Easy and precise correction without drying time. If you want classic tip-ex, we have it in the form of a smart pen that is perfect to keep in a pencil case or pencil cup. Hope you find perfect erasing and correction with us!