BR Class 50 - BR Blue - 50006 'Neptune'BR Class 50 BR Blue 50006 'Neptune' SPECIFICATION Highly detailed OO scale model, 1: 76. 2 scale Minimum Radius 438mm (2nd Radius Set track) in OO Die cast metal chassis RP25 110 profile OO wheels with provision for re gauging with scale sized wheels for P4 EM gauges with simple ride height adjustment and ability to set brake blocks in line with wheels Separately applied etched metal plastic detail parts, including grab handles, steps, wipers, etc.