KX3300 Slngle needle flatbed lockstitch top&bottom feed heavy duty sewing machine. The new type of top-bottom feed machine is with link lever to drivethe lower shaft,and designed with super needle bar stoke,so thargreatly enlarge the ability for sewing heavy/suooer heavy materials with prolonged arm to offer greater working space suitable for sewing leather products,suit-case,bags,canvas,seat-cushios,etc.