Flying Tiger 566×1 Needles, TQx1, Size 100/16(1Pack-25Needles)

This listing is for a box of Flying Tiger brand industrial sewing machine needles. The needles are designated by the system TQ x 1 (also noted as 566 x 1 in the Chinese-labeled box), which is a specific type often used in button sewing machines or other specialty industrial applications. This particular variation, labeled with the character for ‘Eye’ (眼), indicates it is a double-eye needle, designed for sewing with two threads simultaneously, often for decorative or specialized stitching. The needle size is 100/16, where 100 is the metric size (diameter in hundredths of a millimeter) and 16 is the Singer/American size, suitable for medium-weight fabrics and threads.