Korbond Invisible Threads Clear & Smoke 2 x 110m-110055, Nylon, 220m

How thick is the actual thread, what's the diameter?

Any one had delivery issues ordered as was next day and it didn’t come yesterday said delayed due to a delivery issue now been delayed further ?

Can I use this to repair a hole in a jumper?

would this be suitable for shirring fabric using a sewing machine?