Magnetic Core Embroidery Bobbins Style M "Jumbo" - Black 100 Bobbins - 230 yds/Bobbin Style M bobbins work only in machines designed for M bobbins.
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The P-15 Magna-Glide magnetic core embroidery bobbin is wound with the industry standard twisted polyester thread, similar to the Coats V-15 bobbins. The Magna-Glide bobbin is an extremely smooth sewing bobbin with constant tension delivery and no backlash or overspin.
Magna-Glide bobbins work best in embroidery machines with metal bobbin cases |