The Uni-ball Jetstream Colour (also known as the Junior) rollerball brings the excellent Jetstream hybrid ink technology at a lower price, with coloured inks! Jetstream hybrid ink writes super-smoothly and dries super-fast. Very popular with left-handed writers. As usual with Uni the ink is waterproof, fade-proof pigment ink - technically superior to most of the competition. Retractable nib and rubber comfort grip.0.7mm ball writes a 0.35mm line.