Upper Thread Tension Spring (Pulls Up) Part # H11053002
-Upper Thread Tension Spring (Pulls Up)
-Part # H11053002 same as SG12C16
-BabyLock models BL3000, BL4000, BL5000, BL5020
-Riccar models 2910, 2925, 2950, 3400, 3600, 4001, 4003, R650, R916, RE581, RE640, RM570