The Hornby X2240/1 X515/6 Con Rods Valve Gear Set is a vintage part designed for the R084 Princess Class model in 1:76 scale. Made of pressed steel, this analogue control system valve gear set is compatible with Hornby brand trains and is ready to go for OO gauge enthusiasts. With a silver colour and representing Era 3 - The Big Four (1923-1947), this UK-made part is a valuable addition for collectors and model railway enthusiasts looking to enhance their Princess Class locomotives.