I used the thread in my domestic sewing machine, using jeans gauge needles. The tension may need adjusting depending on your machine if the lower thread loops. I made covers for garden chairs, the results are good.
I waxed the finished stitching with with solid beeswax. Definitely recommend.
is what it says, very strong and black! very pleased with it, much better quality than other threads, this should stop the trouser buttons from constantly popping off!