The Tornado Designs convertible rollers use a special capless roller refill that won't dry out if the tip is exposed. You can also convert it to a ballpen as well. Packaged in a distinctively, cool metal cylinder, the Tornado makes an impressive, yet affordably fun gift. Retro 51 introduces new writing intruments to their Tornado family, the Crossword Pencil and Bamboo Edition Rollerball.