Klasse Twin Stretch Machine Needles are for stitching two rows simultaneously to create decorative effects for heirloom sewing, pintucks, and fancy hems. Use them for binding, bias stitching or for dual colored seams to accentuate your creations. Stylize interesting patterns on quilts, mats, runners, or cushion covers. The size of the needle is measured in mm from tip to tip. Size 75/11. 2.5 mm. 1 pc.