Jeans needles have a medium ball, designed to penetrate thick and solid fabrics without damaging the material. The reinforced blade causes less deflection of the needle and reduces the risk of needle breakage and skipped stitches. Ideal for denim and similar fabrics. Works with all household sewing machine brands. Schmetz quality sewing machine needles have been manufactured to exacting standards since 1851. Schmetz pursues an active research and development program to continually improve the performance of its products and ensure that Schmetz sewing machine needles consistently exceed the demands of the most challenging sewing applications. Unlike some cheaper carded needle companies, Schmetz rigourously check all their products to ensure every needle matches the amount of detail and quality of material that has gone into every needle before it. Remember, your sewing machine is only as good as the needle being used!