... 3.OEM Machining 4.Tolerance:+/-0.1mm OEM industrial sewing machine parts, nonstandard industrial sewing machine parts MaterialsteelFinishnoneTolerance+/-0.1mmSize116.25*85.25*30ColornatureTypeOEM ... , magnesium, Aluminum alloy, and zinc alloy etc. 3.Grey iron, ductile iron, cast iron etc. 4 .PP,PE,ABS,PET,PVC 5.organic ...