Rollerball Uni-ball Eye Fine Black Rollerball Add to Cart View Cart Checkout Short Description: Product Description £ 2.49 The Eye features a unique ink flow system that ensures a high writing performance until the last drop of fade resistant and waterproof ink is used. A pen you can rely on. 0.7mm tip to give a line width of 0.5mm. Black ink. Pen Type: Rollerball