Hello everyone! Help me please. I'd like to buy elastic thread, preferably chrystal color. So.. I can't find it.. yesterday, I found it on eBay. Help me to choose right thing please. What about thickness ? Which kind of that should be really invisible? 0.4mm 0.6mm 0.8mm 1.0mm I don't know.. is it suitable for flip card? (Is it good for card trick Hawk? ) Thanks to everyone. I hope you help me.