Prym Sewing machine bobbins for rotary hook 21.2 mm, card 4 pcs.

The rotary hook and the double rotary hook are the most robust and easy to maintain systems that are mainly installed in high-priced sewing machines and in industrial sewing machines. Prym offers the matching bobbins for the small rotary hook and the double rotary hook in metal in sets of five or transparent plastic in sets of four. The bobbins made of transparent plastic help to keep an eye on the colour and supply of the thread at all times, while the metal bobbins have a much longer service life due to their inherent robustness. Sewing machine manufacturers that carry this system include SINGER, DÜRRKOPP, PFAFF and MEISTER.