Upper Thread Tension Check Spring Fits Many See Description

Upper Thread Tension Check Spring Fits Pfaff Models 260, 360

Upper Thread Tension Check Spring Fits Pfaff Models 30 & 130

Upper Thread Tension Check Spring Fits Kenmore Model 158.523

Upper Thread Tension Check Spring Fits Singer Models 31, 31-15, 31-17, 31-18

Upper Thread Tension Check Spring Fits Kenmore Models 158.480, 158.540, 158.840

Upper Thread Tension Check Spring Fits Singer 15-30, 15-86, 15-87, 15-96, 15-97

Upper Thread Tension Check Spring Fits Pfaff Models 139, 239 White 666, 667, 740