Typical GC6710HD3 Direct-Drive High-Speed Lockstitch Sewing Machine with Drop Feed Technical Data∙ Stitch type 301 ∙Max. Sewing speed 4,500 spm (GC6710MD3) ∙Max. Stitch length 7 mm ∙Max. Fabric clearance 13 mm (with knee lever) Integrated direct-drive (300 Watt) for extreme smooth and vibration-free running. Push button on machine head for half-stitch function, integrated sewing light & back tack. Reduction of energy consumption Clearance under the arm 260×130 mm Automatic enclosed lubrication system.