The product in the image is the Pilot "Frixion Ball 4 Wood," model number LKFB-3SEF-B (Black). This model is a high-end version of the Frixion series, which features erasable ink, and its most distinctive feature is the use of birch wood for the grip. It features a wooden grip made of natural birch, giving it a luxurious feel that molds to your hand with use. ◎ Please note that as this is a home-stored item, the packaging may have minor scuffs and scratches. The product itself is new and unopened, so it is in pristine condition. ◆ Main Features of the Product 4-Color Multifunction: Equipped with four colors of erasable ink (Frixion ink) - black, red, blue, and green - in a single pen. Tip: A 0.5mm extra-fine tip, ideal for detailed writing in planners and documents. Design: The barrel color is a deep Bordeaux, with pink gold metal fittings for the clip and tip, creating a subtly elegant look. Eraser Rubber: The ink can be cleanly erased by rubbing with the rubber at the end of the barrel, which generates friction heat. This rubber is also replaceable. ◆ About Replacement Refills When the ink runs out, the following replacement refills are compatible: Black, Red, Blue: "LFBTRF30EF" (pack of 3) or individual refills. Green: "LFBTRF12EF-G" (individual refill). If you prefer finer writing, you can also customize it with 0.38mm refills (such as LFBTRF30UF).