Singer 4423 Heavy Duty Sewing Machine. SINGER HEAVY DUTY SEWING MACHINE: The 23 built-in stitches including basic, stretch, decorative, and buttonhole stitches allow you to sew a variety of projects, such as fashions, home décor, quilts, crafts, and more. AUTOMATIC NEEDLE THREADER SEWING MACHINE: After following the threading path printed right on the machine, this built-in feature helps you to effortlessly thread the eye of the needle without eye strain or frustration. HIGH-SPEED SEWING MACHINE:The Singer 4423 Sewing Machine has a maximum sewing speed of 1, 100 stitches-per-minute, so projects can be sewn quickly. The 60% Stronger Motor provides greater piercing power for thick seams. HEAVY DUTY METAL FRAME: The Singer 4423 heavy duty sewing machine is a true workhorse. With a heavy-duty metal interior frame, stainless steel bedframe, extra-high sewing speed and powerful motor, this sewing machine can sew through a variety of heavy weight fabrics and provides long lasting stability. SEWING MACHINE ACCESSORIES: A variety of accessories are included with All-purpose foot, zipper foot, buttonhole foot, button sewing foot, seam ripper/lint brush, quilting guide, needles, bobbins, screwdriver, auxiliary spool pin, spool pin felt are all conveniently located and stored in the accessory tray. A soft-sided dust cover is also included in the packaging. Note : Refer to the Videos and also the PDF attached below in Technical Specification for Manuals.