A great stitch is an outward expression of solid, inner quality. The FourDLB cast aluminum frame provides the structure for over 250 metal parts. And the integrated lower shaft with precision balanced cams with sturdy metal bushings reduce vibration to provide smooth stable sewing operation. Built on a solid foundation, the Four-DLB provides a wide range of serging features in a compact sewing machine. Precise Janome stitch mechanism ensures beautiful 3/4 thread operation. Smooth operation and fast stitch speeds (up to 1,300) allows sewists to create beautiful off the rack projects with ease. Professional result every time; cut, seam and finish all in one step with the Janome FourDLB.