With the sky blue Pilot Frixion ballpoint pen refill you can continue to use your favourite rollerball pen. This refill contains erasable Frixion refill, which disappears with friction and can be directly overwritten so you don't need an eraser and you can make corrections without paper damage. The writing width is 0.35mm and the ball width is 0.7mm. This pack contains 3 refills. As well as stocking the popular Canon, Brother, Epson and HP brands, amongst others, you can also opt for the 123ink compatible versions. Our own-brand ink cartridges and toner cartridges contain more ink than the original brands and will save you money! Not to mention that all of our 123ink products also come with a 100% lifetime guarantee.