Single Needle Straight LockStitcher With Direct Drive Servo Motor, Control Panel, Electronic Feeding System, Thread Trimmer and Thread Wiper. Complete Set For Heavy Materials. This machine has been designed for tailoring, curtain makers, fashion designers, alterations shops, bridal shops, home, & dry cleaners. This model in the S series is made for heavy-weight material. It is a single needle machine with a direct drive, an electronic feeding system, and an automatic thread trimmer. The direct-drive motor operates without a drive belt and can operate on lower power voltage than standard sewing machines.