Eliminate bobbin winding, increase production and produce less waste with the pre-wound Star Ultra D92 G-Type bobbin. Constructed from 100-percent bonded polyester, the bobbin has excellent sewability and a precision wind. The UV-resistant, mildew-resistant and pre-wound thread is treated with liquid resin, cured and lubricated. Bonding prevents fraying at the cut end and helps resist untwisting. Bobbins are available in black or white.