Also called HAx1SP. This needle will work on any home serger that uses a flat shank needle. This is a special version of the 15x1 for stretch or elastic materials and tightly woven knits. It is made to higher standards, it has a snake's head shape due to a combination of a slightly bulged eye and a slightly reduced blade above the eye. The bulged eye opens a slightly larger space in the material and the thinner blade above the eye reduces contact between the material and the needle. This reduces needle heat-up and prevents skip stitches.
