of the lower support arms 50 are connected by a lower support arm rod 60 which extends between the lower support arms 50 passes through a hole provided in each of the proximal ends of each of the lower support arms 50 and continues a distance to protrude from the outer aspect of each of the lower support arms 50 to form a pair of lower support arm pivots 70 attachment means are provided for attaching the basket supporting assemblies 40 to the rack the members 25 may be provided with a plurality of aligned pairs of channels 80 and wells not shown for retaining the upper support arm pivots 65 and the lower support arm pivots 70 respectively the channels 80 are located on the inner aspect of the members 25 extend horizontally and open toward the rear of the cart 10 one of the pair of channels 80 is located on each of the members 25 and the pair of channels 80 is positioned at equal height the upper support arm pivots 65 are releasably retained within the channels 80 it is preferred that each of the channels 80 be provided with a releasable retaining clip not shown of conventional manufacture to releasably retain the upper support arm pivots 65 within the channels 80 the lower support arm pivots 70 are rotatably retained within the wells a pair of plugs not shown may be fixed to the lower support arm pivots 70 and the size of the wells may be increased to correspond with the plugs to provide more secure.