The 4 TUL GL Series Gel Pen Refills in medium point with 0.7mm size offer a convenient and high-quality writing experience. Made in Korea, South, these black ink refills come in a pack of 2 sets, ensuring you have an ample supply for your writing needs. The TUL brand is known for its reliable and consistent performance, making these ink pen refills a dependable choice for office and business use.