The Lubor Lens is a fantastic optical illusion. You show a bizarre optical illusion…and give the plastic lens a twist. The center of the pen suddenly becomes TRANSPARENT…and then completely INVISIBLE! She can even see right through her spread fingers where the center of the pen was a moment ago! Another twist of the lens and the missing pen center suddenly becomes VISIBLE AGAIN! Easy to carry in your wallet a must-have tool for every magician we supply youLubors Lens only use it with any borrowed pen. Comes 1 Plastic Lubors Lens in a package without instruction. To perform the trick you just have to turn theLubors Lens in 90 Deg. that it…