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2-needls 4-threads, safety stitch (piping)
									 
					
stitch type 515 (503+401)
														 
										
| Subclasses | Use | Maximum speed | Fabric weight | Remarks | 
|---|---|---|---|---|
| EXT3215-C3P1/233 | ・[Use]piping | ・[Maximum speed]6,700 sti/min | ・[Fabric weight]Medium~Heavy | ・[Remarks] | 
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