Pentel R.S.V.P. Ballpoint Pen, 0.7mm Fine Tip, Blue Ink, Box of 12 (BK90-C) Features a Latex-free Comfort Zone Grip for exceptional balance, comfort, and control. Stainless steel tip provides extended durability. Dark, vivid ink color of each pen is indicated by the stylish barrel color. Writes smooth lines of consistent density. Conveniently refillable with Pentel BKL10 ink refill.