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

Upper Thread Tension Assembly Fits Singer Industrial 31 Class, 44 Class, 31-15

2 SET THREAD TENSION SPRINGS FIT FOR SINGER 15-88, 15-90, 15-91 SEWING MACHINES

Pair Original Vintage Singer Upper Thread Tension Discs 2102 15-91 66 99 201 221

Upper Thread Tension Springs Fits Singer Sewing Machine Model 27, 127

Upper Thread Tension Spring Kit Fits Singer Sewing Machine 66, 99 Old Style

Upper Thread Tension Springs Fits Singer Models 201, 201-2, 201k, 1200, 221

Tension Disc, Singer