... s convenient to install on all kind of sewing machine. Widely used in garment, such as bra, ... 2, Sewing machine type: Z for zig-zag, K for overlock, and C for coverstitch3, Adaptable sewing machine brand and ... model4, SY is short for synchronizer, witch is adapted on the belt pulley. Digital metering device HDE8-C ... for coverstitch sewing machine