This pack of 3 Black UB-157 Rollerball Pens feature medium tips and liquid pigment ink that protects against document tampering and enables fluid, skip free handwriting.The uni-ball Eye fine contains uni Super Ink, which is fade resistant, water resistant and tamper proof. A unique \'uni-flow\' system ensures a continuous flow of ink right down to the last drop. This pack is made up of plastic free packaging making it an environmentally friendly alternative to plastic.. Pack of 3. 0.7mm medium line. Consistent smooth writing. Plastic free packaging . Fade resistant, water resistant and tamper proof ink. Approximate dimensions (mm) H 179 W 80 D 11