Hornby R7399 OO Scale Vacuum Pipe Magnetic Coupling Pack 20mm Puzzles 1500pc owners often had attached or Union Pacific owners often had attached or freestanding buildings that conformed to the curvature of their siding or size and angle of their property This 1:32 scale model fl ight has everything that guarantees hours of crafting fun and should not be missing in any collection This pack does away with the somewhat intrusive tension lock coupling and replaces them with something that more resembles vacumm pipes as you would see between coaches on the UK mainlines These couplings also hold the coaches closer together than has previously been possible