Singer Overlock Looper Left Lower 14HD854, 14SH754, 14U554 - 550411
Double check the image of the item is the same as you have, sometimes manufactures slightly change the shape
You must be very careful when fitting as this needs to be set correctly for the timing of the loopers to meet.
if your looper has bent or broken then the other looper may also be damaged
14CG744, 14CG754, 14HD854, 14SH744, 14SH754, 14SH764, 14U544, 14U554, 14U555, 14U557, 850SCH, HD0400S
Genuine Part No. - 0550411000 550411