The Pentel Sunburst Gel Pens feature sparkling metallic colors for use on light or dark paper. Fun metallic tones jazz up your page! Great for memory books, photo albums, journals, party invitations and more! Ultra-fine 0. 4 mm Point for the ultimate precision. 0. 4 mm Point lets you create clear, legible text — even in the tightest of spaces. Gel ink technology for a smooth flow! Fluid gel ink flows consistently from the tip so your page has no skips or messy ink blobs. Ink is waterproof, smear-resistant and acid-free. Ap certified non-toxic. Nonrefillable.