Use this clever gimmick instead of a thumb tip. Vanish or produce a silk or a large load of salt etc. E.G. You poke a silk into your closed fist with the pen. Use the pen as a magic wand and when you open your hand the silk is gone and you can place the pen on the table. YES it can be examined! Comes complete with gimmick, ballpoint pen and instructions in English. Excellent method to vanish a silk in front of thumb tip owners!