The 137X1 SM needle (needle system 137X1) has a normal round point for working woven and knit fabrics. It is used in industrial sewing machines. Suitable machine classes are found, among others, at Singer (classes 114 - B 103, 114 - E 103, 114 - K 103, 114 - W ALL CLASSES), Taking (classes TK, TK - 111- 1 TO 111-3, TK - 111-10) and Treasure (classes ES, ES - 1114 OTHER CLASS, ES - 11414-10 ALL CLASSES, ESA ALL CLASSES).
The available needle sizes are used, among others, for medium-weight standard woven and knit fabrics for everyday garment production. As sewing thread, a matching thickness is usually recommended depending on the needle size chosen, e.g. from Amann Serafil (polyester) or Rasant (polyester/cotton).