Pilot FriXion Ball Slim Refills for Multicolor LFBTRF30UF3C X 3 Colors X 5 Packs Pens, 5, 0.38mm,

■This product comes as a 5-pack set. FriXion ballpoint pen, erasable when rubbed. Refills ■Size (1 piece): Maximum diameter Φ3.6mm x total length 87.5mm ■Specifications: Ballpoint pen = 0.38mm, Color = Black, Red, Blue Main applicable products: Frixion Ball, other colors, Slim ◎This is a set of 5 packs of Friction refills, each containing 3 refills. The ink becomes transparent when rubbed. "FriXion Series" refill. It uses a unique "Friction Ink" that disappears when the temperature exceeds a certain level. When you rub the handwriting with a special rubber, the frictional heat generated turns the ink colorless and transparent. No eraser dust comes out even when rubbed. The ink is made colorless using temperature changes, so no eraser dust is produced. It can even erase handwriting that has gotten into the grain of the paper, so there is almost no residue left behind. You can write and erase anything as many times as you like. You can rewrite the erased part as many times as you like.