Product Name: High-Speed Chain Stitch Sewing Machine (SM3800) 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 This machine adopts link-typed feeding mechanism, needle bar thread taking up, and looperthread catching to produce two lines of chain stitch,which is firm and elastic,suitable forlapping seam and decorative seam on garment,underwear,bedding articles and leathergoods,there are five different gauges available for selection.