... TFO thread Key features & specifications:1. Counts:20/2,20/3,20/4,20/6, 30/2,30/3,40/2,40/3,50/2,50 ... , 50/2, 50/3, 40/2, 40/3, 30/2, 30/3, 20/2, 20/3,42s/2,20s/6,etc.Ningbo Bo Yun ... Staple Fiber • ColorMore than 800colors available• Size20/2, 20/3, 20/6, 30/2, 30/3, 40/2, 40/3, 50/2, 50/3 ...