Matriz redonda para máquina de coser Pinggong (SM), las especificaciones incluyen SM1/8-48-40SM9/64-40 SM11/64-40-32SM3/16-40-24SM13/64-32SM7/32-32-22 SM15/64-28SM1/4-40-20SM17/64-32SM9/32-28-20SM5/16-28-18SM11/32-28SM3/8-28-16SM7/16-28-16SM1/2-28-12SM9/16-20SM11/16-28 SM7/8-20SM1-20 .




