Lots of people know #4 black cotton tie line as “trick” line.
This material is a favorite of magicians and set decorators who want to make something disappear against a dark background.
Since most theatrical backdrops and floors are matte black, you can use black cotton tie line to suspend items, even to the point of making them appear to be hovering in the air.
Try this great product to create some illusions of your own, but remember, #4 trick line is not rated for overhead lifting and should never be used to suspend something over peoples’ heads.
Harrison Bros. Inc.