This is the same as the Petrie "New Style Handkerchief Tube" of a century ago.
Metal
construction. The interior is painted dead black. The load area can easily hold an 18" silk.
I won't say "no skill required" because everything requires skill, and I won't say "you perform
it five minutes after you open the package" because only a fool would do anything for spectators
five minutes after opening the package. But it's almost that easy.
And yes, you really can
get a spectator to put the paper caps on the ends (with only a little cheating).
Good
angles. Effective, deceptive, all the things that the true classics of magic are.