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

This upper thread tension check spring, size Large, is designed to pull down. Part number 55645. Compatible with Singer models 15-30, 15-86, 15-87, 15-96, and 15-97, as well as White 1514, 618, 7011, 7012, and 7013, and Singer 15 clones. Barrel length measures about 8mm and inner diameter is about 10mm. Please note that these springs are not suitable for use with 15-88, 15-90, 15-91, or 15-125 models.