2 blue Parker Quink gel pen refills with a medium point (0.7 mm). The gel ink writes smoothly and has an intense color. The ink is waterproof and does not fade. The Quink gel pen refill fits all Parker gel and ballpoint pens and features advanced ink technology for optimal writing results. With the gel pen refill, you can write approximately 600 meters, which is 20% more than with a Parker Quink Economic gel pen refill. Additionally, the gel pen refill is of higher quality, as it is made with stainless steel.