This is a good thread reel, the thread is strong, barely visible, invisible in the right lighting conditions. When the thread breaks this can be fiddly to put back together. I had to use a knife to cut deeper grooves on the foam ends. Not sure on the longevity of this product, but I've been using it heavily for a couple of weeks (trying out new applications, performing floating 20 etc). When the thread snaps and goes back into the reel, you will need a good 10-20 mins to fix it.. so buy TWO!