Superstretch needles for use with tricot and jersey stretch fabrics. Stretch needles are suitable for elastic fabrics such as silk, Lycra, sweatshirt fabric, knitted fabrics and tricot. The needle has an extra rounded point and a special needle eye. When even a normal stretch needle still skips on difficult fabrics, use HAx1 SP needles. This needle can also be used when your sewing machine or overlock machine keeps skipping stitches. Universal needles with a flat back.