Heavyweight was designed to accommodate Singer 221 and 222 model Featherweight® sewing machines, creating a totally flush work surface. The 2-position manual lift allows you to go from free arm to flat bed sewing while the steel locking legs minimize machine vibration for straighter stitches. Heavyweight has durable wheels make for easy transportation. This sewing table arrives fully assembled, and with a 3-Year Warranty, you can be confident that you'll be sewing on your Heavyweight table without worry!