Organ EL x 705 Chromium Needles have a chrome-plated surface for the highest demands, a specially pronounced groove, and a double thread groove for optimum thread tension. This needle has a light ball tip. This needle is suitable for overlock (cover-stitch) household sewing machines such as Brother, Singer, Pfaff, Husqvarna, Janome, Bernina, Veritas, and Toyota. It is NOT suitable for normal household sewing machines. Favorite Uses: Great for use in an overlock (cover stitch) machines and serger machines. NOT for home sewing machines.