Thanks everyone for your advice

Looks just like mine except for the the side bar. I think that that piece is for sewing lines the same distance apart. You adjust side piece to the width apart that you want the lines to be and then sew with walking foot using the point on the bar as the guide. Mine does not have that and I wish that it did. The price seams good also. Using the walking foot is just like sewing with a regular foot. It just moves the top material along with the bottom so there is no puckering or slipping of fabric. It can also be used when sewing fleece. binding on blankets or even regular seam sewing if do not want to change foot.