1, MCA18K-38 2, computer control 3, auto cut & re-insert elastic 4, ... 38 Item nameComputerized metering deviceModelMCA18K-38UsageFor overlock sewing machine onlyGW/NW12.5/11kgsSize435*370*345mmFeatures:1, ... s convenient to install on all kind of sewing machine. Widely used in garment, such as swimsuit, ... 38 for 38mm, 64 for 64mm4, Adaptable sewing machine brand and model5, SY is short for synchronizer, ...