Abstract: The present invention relates to the improvements in the locking system providing the sides of the foldable crates to be locked to each other. The improvements in the locking system improved with this invention is characterized with having the finger press protrusion (19) and the side connections of the finger press protrusion (20) joined with the finger press protrusion is located on the surface (12) of the male part (4) of the locking system disclosed at the patent of addition of the main patent application numbered 2005/02815 submitted in Turkey on the date Jul. 19, 2005 and the PCT patent application numbered PCT/TR2006/000031 submitted on Jul. 13, 2006 benefiting from the priority right of this said application.