Used & work perfect with no problem for all kind of material light to heavy weight...
â€¢ Seaming Knits Medium to Heavy weight: 1 needle, 3 threads, differential feed, curved needle Mark IV over edge. For trimming and seaming heavy T-shirts, sweatshirts, sweatpants, polo shirts, shorts, knit slacks, sleepers and similar knit or polar fleece garments.
â€¢ Seaming Woven Medium to Heavy weight: 1 needle, 3 threads plain feed curved needle Mark IV over edge, with wide presser foot. For trimming and seaming operations on snowsuits, jackets, ski pants, garment pockets and similar garments.
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