... KLY737/747/757, it is super high-speed overlock sewing machine;2.KLY737/747/757 is applicable to the over edging ... lines, 4-lines and 5-lines kind; Model Number KLY737 KLY747 KLY757 Max. Sewing Speed 6000spm 6000spm 5500spm Needle type DC×27 ... including : ROTARY HOOK AND SHUTTLE HOOK,BOBBIN CASE AND CAP, BOBBINS,NEEDLE PLATE,SEWING MACHINE, NP-7A GK26-1 ,HOUSEHOLD SEWING MCHINERY PARTS,SEWING MACHINERY ...