The Uni-Ball 207 Impact Gel RT Refill in Bold 1.0mm with Black Ink is a high-quality pen accessory designed for use with Uni-Ball pens. Made in Japan, this refill features a gel ink formula that provides smooth and consistent writing performance. The 2-pack option (6 pack in total) ensures that you have an ample supply of ink for extended use. Ideal for office and business settings, this product is a reliable choice for those seeking precision and quality in their writing instruments.