The Gaugemaster Dapol GM2210101 Class 66 66789 British Rail 1948-1997 BR Blue GBRF is a highly detailed model replica of a British Rail locomotive from 1948-1997. Made of diecast material and featuring a Co-Co wheel configuration, this 1:148 scale locomotive is designed for the N gauge railway system. With an analogue control system, darkened wheels, and pin point bearings, this locomotive also boasts a 5 pole motor and a detailed body with etched grills and separately fitted hand rails.