Hornby R7399 OO Scale Vacuum Pipe Magnetic Coupling Pack 20mm BEC This miniature masterpiece captures the Shorty Battery This miniature masterpiece captures the essence of the iconic Chevrolet Corvette with impeccable attention to detail and precision Layout plans suggestions can be found in our publications ‘Track Plans for Layouts to Suit all Locations’ (Ref PM 202) This coupling pack is the perfect accessory for the Big Four era and BR Mark 1 and 2 coaches 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