The SINGER® Heavy Duty Extension Table for computerized Heavy Duty sewing machines provides a stable, level surface for sewing larger projects. Simply take off the removable storage compartment to access the machine’s free arm, then slide the Extension Table onto the machine.Details:Gray9.5" x 18" x 13.5"For Computerized Heavy Duty Sewing Machine models 6800C, 6700C and 6600CEasily snaps onto the free arm of the machineLegs easily fold away for storage