Pentel R.S.V.P. Ballpoint Pen, 1.0mm Medium Tip, Blue Ink, Box of 12 (BK91-C)
Features a Latex-free Comfort Zone grip for exceptional balance, comfort, and control.  Stainless steel tip provides extended durability.  Dark, vivid ink to really make your mark!  Writes smooth lines of consistent density.  Conveniently refillable with Pentel BKL10 refill.