You are looking at an Z Gauge Large winged end pier support for a bridge with brick/stone feature detail.
End Pier: 73.6mm (Max Width) 32.5mm (Min Width) x 31mm (bottom depth) 12.6mm (top depth) x 31.4mm H
Please Note: These items are resin printed in grey resin, all items come unpainted and may have tiny little marks on the bottom due to the nature of the printing procedure but these are easy to sand/file as you see fit. Some items do have tiny holes in the top/bottom, this is to allow the resin to run out and the whole item to be cured properly. Also any girder or mid supports are not included the listing is for 1 x end pier, this is just to give you an idea of what they can look like.
Please check out our other listings for the N Gauge and OO Gauge version of this model