Writing Levenger Ballpoint Refills | Fisher Pressurized Ballpoint Refill

Medium-Point Fisher Space Pen Pressurized Refill. Standard Refill Fits Most Fisher Pens, And Lasts 3 ½ Times Longer Than Typical Ballpoint Refills. With A Fisher Space Pen Using This Refill, You Can Write Upside Down, At Any Angle, Under Water, Through Grease, Extreme Temperatures (-30 To +250 Degrees F), On Almost Any Surface, Three Times Longer Than The Average Pen, And Of Course, In The Gravity-Free Vacuum Of Space.