Ergonomic and powerful machine structure, speed milling feature, excellent sewing strength even on difficult to sew materials Outer leg fixed needle shaft and front leg movable structure, Powerful 750 W electronic motor and new geared drafting system Stable oil distribution thanks to new lubrication system, Automatic bobbin system ensures stable winding every time GC 20665L25 Single needle mechanical 2,000 RPM 9 mm stitch length 650 x 103 working area 20x 3 threads GC 20666L25 Double needle mechanical 1,800 RPM 9 mm stitch length 650 x 103 working area 20x 3 thread usage