The 134 ER needle (needle system 134) has an eccentric round point for working woven and knit fabrics. It is used in industrial lockstitch and general-purpose sewing machines. Suitable machine classes are found, among others, at Pfaff (classes 138, 238, 438, 546), Juki (classes DDL-5550N, DDL-5550N-7, DDL-5550NA, DDL-5550NA-7) and Singer (classes 107-W1, 107-W10, 107-W100, 107-W102).
Thinner needle sizes are used, among others, for light, fine woven and knit fabrics such as blouse and shirt fabrics, and the thicker versions for heavy, multi-layer woven and knit fabrics as well as technical textiles. 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).