The needle of system 130X19 has a large round point for sewing on buttons. It is specifically designed for industrial button-sewing machines. Suitable machine classes are found, among others, at Singer (classes 11, 12, 14, 16), Cornely (classes 12, 12 ALL CLASSES) and Elcu Sud (classes TC 101-105).
Thinner needle sizes are used, among others, for smaller buttons on light to medium-weight fabrics, and the thicker versions for medium-sized buttons on medium-weight jacket and coat fabrics. As sewing thread, a strong polyester thread, e.g. from the Amann Serafil range, is usually recommended, in a thickness matching the needle size chosen. The large, sturdy point reliably pierces both the fabric and the button's holes.