These "Jeans" sewing machine needles are very durable, premium quality needles and are ideal for jeans fabric and for other firm fabrics such as artificial leather or thick cotton. These needles are equipped with an extremely-slim tip, allowing them to easily penetrate heavier fabric without damaging the fibres. These chromed sewing machine needles are processed to be extremely stable – furthermore, the shaft was reinforced, which allows for reliable needle guidance and reduces the risk of needle deformation, breakage, or even faulty stitches. They are designed for use in all conventional household sewing machines. The economy pack contains five sewing machine needles, optionally assorted in thickness 90 or 90 to 110.