1, MCA18K-38 2, computer control 3, auto cut & re-insert elastic 4, underwear & swimsuit 5, ... metering device MCA18K-38 Item nameComputerized metering deviceModelMCA18K-38UsageFor overlock sewing machine onlyGW/NW12.5/11kgsSize435*370*345mmFeatures:1, Auto cutting and ... , Feed width (max): 38 for 38mm, 64 for 64mm4, Adaptable sewing machine brand and model5, SY is short for synchronizer, witch is ...