The TRIANG HORNBY X454 Cylinder Block is a genuine Hornby product designed for early Britannia Class 7MT locomotives. This analogue-controlled cylinder block is specifically compatible with Hornby trains operating on a DC power type, in a 1:76 scale. It is a crucial component for collectors and enthusiasts looking to maintain the authenticity and functionality of their model railways. Perfect for those who appreciate the intricate details and craftsmanship of model trains, this cylinder block is a must-have for any Hornby enthusiast.