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. It is also available in a light ball point to separate the fibers rather than cutting them, avoiding needle holes in the fabric.

• For Babylock, Bernina, Brother, Elna, Juki, Pfaff, Singer, Viking, White and any home serger the uses flat shank rather than round shank needles.