Pentel RSVP RT Violet Ink BK93CRV-V, 1.0mm Medium Point. The Pentel R.S.V.P. RT (BK93CRV-V) delivers a juicy 1.0 mm medium line of vibrant, quick-drying ink that flows like a dream and refuses to skip—even on the go. lick once and you’re writing; the retractable tip and cushy latex-free grip keep your hand happy for pages and pages. See every drop through the clear barrel, clip it anywhere with the tough metal pocket clip.