So Fine on M-style prewound bobbins. NEW. 136 yds per bobbin.
These are in the test phase so only two colors are available.
Limit: 4 bobbins.
M-style compatible machines are A-1, Gammill, HandiQuilter, Homesteader, KenQuilt, Innova, and some Noltings.
So Fine is a #50/3-ply lint-free polyester thread. Sold individually.