Klasse Titanium Embroidery Machine Needles feature a wider hole to allow the thread to pass freely. Another feature is a pontoon scarf with oversize bump to reduce the chance of skipped stitches which can result when fabric is flexing up and down rapidly with the fast moving embroidery stitch. Specially designed for machine embroidery using Rayon, Polyester or Cotton machine embroidery threads. A titanium coating makes these needles more durable so they last longer than standard needles.