The explanations are good. The tube is well made. I highly recommend this product which works like a
Brema tube. Personally, I will use it with a signed card in the wallet. After taking out the wallet,
a banknote is signed and put under a handkerchief. If I succeed, I win the banknote !... The signed
card disappears and ends up in the wallet on the table. The banknote disappears from the
handkerchief and ends up in the felt-tip pen... Enjoy ! Alan