DON'T BOTHER; "if it sounds too good to be true, it usually is" applies here.
Threads easily.  That's all I can say good.  The needle holder in my kit (purchased from the paid advertisement on TV) was empty.  When I tried to make repairs with the thread in the kit it broke twice before I could even get it started unrolling good.  No wonder they can offer a second set "free", the materials are so cheap.
Rating: 1 stars