Packs of 10 super-strong NEM compatible magnetic couplers for OO/HO are available to order now from Heljan. Developed in connection with their superb Newton Chambers Eastern Region Car Transporters, they have proved so successful during tests that Heljan have produced an additional quantity to offer as an upgrade to existing OO coupler types. Containing five pairs of couplings per pack (10 total), item 19850017 offers excellent value for a very useful upgrade that provides a reliable and discreet connection between any locomotives and rolling stock fitted with NEM coupler boxes.