Norscot 55098 Caterpillar 5110B Metal Track Excavator 1/50. Die-cast metal with operating bucket and articulated body, excellent level of detail and quality paint brand-new mint in box. Large substantial model of a giant excavator with all-metal construction, great on O scale mining diorama or for the collector. 55098 Caterpillar 5110B Metal Track Excavator.