[Uses] Wet paper, upward writing on the site. [Functions and Features] Compression refill eliminates the weak points of the ballpoint pen. Ink will not come back when writing upward against gravity walls or ceilings. Write on wet paper. Writes in subfreezing areas Material: Shaft / Grip: Recycled PC resin. Mitsubishi Pencil Co., Ltd., 07 Red Pressurized Ballpoint Pen Naked by DCM Online. We also carry many other carpentry tools.