drawer guide stop

this is a drawer guide stop that mounts to the horizontal rail underneath a cabinet drawer. There are no names, numbers or markings on any part of this drawer guide. The pictures make it look shorter than it is. The piece measures 1" wide by 9/16" deep with varying widths. Product Code: 32-078 is the part that we think will replace the guide piece for the bottom of the drawer. The piece in question stops the drawer from pulling all the way out.