PILOT FriXion Ball Nock Zone Ballpoint Pen (0.5mm / 0.7mm) 1 piece Next-generation model of erasable ballpoint pen with new ink for "thicker and longer" writing. The newly developed "Premium Frixion Ink" with increased ink density has been adopted to achieve more writing than ever before, and new features such as the "Tip Hold System" that suppresses nib rattling for stable writing and the "Noise Cut Nock" that significantly reduces the noise when operating have also been added. These new "Zone Technology" features help businesspeople, who are often engaged in creative thinking, to improve their concentration when writing. Ink color : Black