DOMESTIC METAL BOBBIN CASE WITH NO BACK LASHA special anti-spin spring is built into the bobbin case assembly to prevent the bobbin from spinning when the machine is suddenly stopped. If the bobbin spins when the machine stops, there is a good chance that a single loop of thread will fall out of the bobbin case.This condition will cause the thread to snap as soon as the machine begins to sew.GENERIC PARTWILL FIT SINGER, BROTHER, RICCARDOMESTIC SEWING MACHINES INC MODELS,Will fit Brother Sewing Machine Models:
Galaxie 8015, TZ1-B652, XL702, XL703, XL622, XL2005, XL4001 & XL5001.Will fit Riccar Sewing Machine Models:
414, 500 , 515, 525, 551, 606, 805, 806, 807, 906E, 888, 2600, 2800, 2900, 3300, 3400, 3500, 3600, 4001, 4003, 8400, 8500, 9150, 9160, 9600, 9700, 9800 & 9900.Will fit Singer Sewing Machine Models:
20U, 20U73, 20U73B, 20U83 and 20U83B.