Product Name: High-Speed Overlock Sewing Machine (SM-737D 747D 757D) Model NO.: SM-737D 747D 757D Stitch Type: Lock Type Needle Number: Double Needles Thread Number: Double Threads Drive: Electric Applicable Thickness: Middle Thickness Material Application Place: Factory Certification: CE Condition: New Classification: Sewing Machine Nailcatcher Machine Stitch: Single Chain Stitch Buttonholing Machine Type: Round Buttonholing Machine Type: Garment Automatic Grade: Automatic Trademark: SIMARU Transport Package: by Carton Specification: 1pc in carton Origin: Taizhou Product Description Direct drive servo motor and the conventional belt drive is more likely to save about 70%energy, suitable clothes equipment industry, in thin,thick material sewingmachine,efficient,energy-saving,environmental protection,quiet,stable,the needle stopaccurately,arbitrary speed,having upper and lower needle petitioner.