PILOT Frixion Ball Switch Frixion Ink Ink Black Barrel LB31FBS1B Erasable Ballpoint Pen Ballpoint Pen Pilot 0.38mm (Black, Red, Blue) + Oil-based

[Erasable and permanent in one pen] The Frixion Ball Switch is a writing instrument that combines the erasable "Frixion" ballpoint pen and the permanent oil-based ballpoint pen into one pen. You can switch between the convenience of erasable writing and the peace of mind of permanent writing without having to switch pens. [Alcohol-Resistant Oil-Based Ink] The non-erasable oil-based ballpoint pen uses "100% pigment oil-based ink." It boasts excellent water resistance, light resistance, alcohol resistance, and abrasion resistance, making it an ink that is difficult to erase in all everyday situations. [Pen tip diameter and product size] Erasable ink: 0.38mm, Oil-based ink: 0.5mm, Maximum diameter φ13.8mm, Total length 145mm [Refill part numbers] Erasable ink: LFBTRF-30UF Oil-based ink: BRF-15 [Precautions] The black, red, and blue slide lever refills use friction ink that can be erased by rubbing with the rubber on the top of the pen. Do not use them on documents, addresses, or anything that should not be erased. The black clip slide lever refill uses oil-based ink that cannot be erased by rubbing.