Serge with confidence on multiple layers of denim, layered knits, and heavy-duty fabrics with this heavy-duty Brother Serger. The ST4031HD is a durable, heavy-duty serger that is made from high-quality metal inside and out. This is a 3 or 4 thread serger that allows users the flexibility to handle thick materials with ease, yet has the precision to work with lightweight fabrics. The Brother ST4031HD includes a high-durability blade made from carbon steel that can cut a smooth, clean edge though multiple fabrics without hassle. The strong interior metal frame helps ensure your serger remains stable on your work surface, even at very high speeds. The wide, detachable table built into the ST4031HD keeps heavy fabrics on a level surface with the needle, helping to prevent excess pulling on the needle and thread for better finishing. The Brother Serger allows you to get more serging done quicker by sewing up to 1,300 stitches per minute. To adjust the speed, simply apply less pressure on the foot controller to suit your individual comfort level. This serger works with either 3 or 4 threads for added flexibility. For example, 4 threads are useful for a strong overlock seam on woven material and 3 threads for overlock stitching on knits or suits. The color-coded guides printed on the machine show you exactly where to place each thread for trouble-free threading. The Brother ST4031HD comes with large spools of serger thread, sewing feet, a soft cover, an accessory bag with a needle set, 4 thread spool caps, 4 thread nets, tweezers, a cleaning brush, a hexagonal driver, a trim trap, a foot controller pedal, and an instruction manual. Serge with confidence on multiple layers of denim, layered knits and heavy duty fabrics. Professionally cut and finish in one easy step on a wide range of projects. The Strong & Tough blade is manufactured of strong, durable carbon steel, and can cut a smooth, clean edge through heavy fabrics. Heavy duty metal frame. This heavy duty frame is built for durability and longevity, for many years of extended use. The wide, detachable table keeps heavy fabrics on a level surface with the needle, helping to prevent excess pulling on the needle and thread, for better finishing. Up to 1,300 stitches per minute. Get more serging done, faster, with the ability to sew up to 1,300 stitches per minute. Simply using less pressure on the foot controller allows you to sew slower, to suit your comfort level and project. The Strong & Tough Serger thread stand is made of solid metal, for enhanced durability and longevity. The thread stand helps ensure that the thread feeds up and off your thread spools correctly. 3 or 4 thread capabilities. This serger works with either 3 or 4 threads, for added flexibility. For example, 4 threads are useful for a strong overlock seam on wovens, and 3 threads for overlock stitching on knits or suits. The color-coded guides printed on the machine show you exactly where to place each thread, for trouble-free threading. No need to pull out the manual when you want to thread your machine! The trim trap collects the fabric trim as the serger knife trims and serges your project, and can be easily detached from the serger. Differential feed ratio of 0.7 to 2.0. The differential feed controls the movement of the feed dogs that move the fabric through the machine. The ability to adjust the feed dogs helps provide smooth, even stitching and versatility. Convenient stitch width control. Simply turn the stitch width adjustment dial to change your stitch width between 5.0mm (3/16 inch) and 7.0mm (9/32 inch). Adjusting the stitch width allows you to create serged seam finishes that lie flat. 3 Feet: Standard, blind stitch and gathering feet. 4 Mini thread spools. 4 Spool caps and 4 Thread nets.