The needle or needles in an overlocker are extremely important and need to be straight and have no bashed points. Because of the speeds overlockers achieve their needle don't last as long a sewing machine needle. They do need to be replaced more often for best results.
Strong heavy weight 3.0 mm Twin sewing machine needles for stitching medium to heavy fabrics they give lovely perfectly parallel stitches. Made by Singer for universal fitting types 130/705H, HAx1SP or 15x1! ... more Info