4mm/1: 76 scale for OO railways or 20 mm wargames.
Brick tunnel or bridge portal to span a 47 mm wide gap.
Can be used for road or river traffic or branch line.
4 piece set. Arch + 2 retaining walls and a top wall strip when using as a bridge.
Dimensions. Exterior front piece is 85 mm Wide x 4 mm Thick x 80 mm High Arch is 47 mm wide x 61 mm high.