Rear Drawer Track Bracket Broken

Came home to find the utility drawer hanging at a 45 degree angle. The culprit is this rear track bracket which had cracked in half. The drawer slide (the part attached to the drawer itself) reads "Unigrass 6600". No markings on the bracket other than "Left" and "Right". Dimensions for the opening where the track fits in at 7/16" by 3/8".

Do you have this item or any suggestions for a replacement? Thanks.