Next, the rack is laid on the ground and each half is lined up. A nylon washer is placed on each of the hinge pins that will attach the main rack to the base. The rack is slid together and hinge pins are inserted into the hinge pockets located on the rack. There are two empty rings in the middle of the basket that line up with the two hinges on each side. A 1/2-inch bolt is then installed on either side, locking the rack to the base.