PILOT Pilot Refill Ink Cartridges LP3RF12-S5-L 0.5 Blue Juice Up Single Color, Set of 3 New This is a refill for PILOT's single-color Juice Up series ballpoint pens. Available in black, blue, and red, in 0.3, 0.4, and 0.5 mm sizes. Please comment with the color and size you need. These are not often found in stores, so if you're looking for them, please consider this. I also have other refills available, so please ask if you are looking for something specific! Other refills can be found here: #Zリフィル