Image Item No. Description  650  Hinge Coupling Nylon - Two Connected 2 x 2 Plates Catalog: Parts: Hinge  3149a  Hinge Plate 2 x 4 Base without Hole Catalog: Parts: Hinge  314a  Hinge Plate 2 x 4 Top without Hole Catalog: Parts: Hinge  3149ac01 (Inv)  Hinge Plate 2 x 4 without Hole Catalog: Parts: Hinge