With a heavy-duty metal frame, stainless steel bedplate, extra-high sewing speed and powerful motor, the Singer 4423 Heavy Duty can sew through just about anything you throw at it. Whether you're looking to make garment alterations or to start a new project from scratch, the 4423 Heavy Duty is an easy-to-use and versatile machine. Its automatic needle threader is sewings biggest timesaver, and the machines 1,100-stitches-per-minute speed allows you to bring your creative ideas to life quickly.