Not only is the thread Ultra strong, it’s virtually undetectable, and the Thread Genii itself is practically invisible as well. With a quick access alligator clip for instant setup, and a 2.5 inch lightweight size, you can clip it just about anywhere. It’s size and light weight will go unnoticed. No snagging, and just the right amount of adjustable tension to let you perform miracles that will blow the minds of your audience! Contains 18′ feet of thread.