This coupling pack is the perfect accessory for Mark 3 or Mark 4 coaches and thusly any Intercity 125 or 225 consist. This pack replaces the tension lock coupling with magnetic couplings that more closely resemble the full-size buckeye couplings found on UK mainlines. Hornby has been a leading designer of model railways for over 100 years, specializing in 00 Gauge model railway design since 1920. This product is an authentic Hornby product, guaranteed for authenticity and compatibility with Hornby track products. It is designed to ensure a secure and snug fit for your model train tracks. This is an ideal tool for maintaining and keeping your model train track system in optimal working condition, ensuring smooth and consistent running for uninterrupted train operation. The application process is simple and straightforward, making it convenient for hobbyists. Made from high-quality materials for long-lasting performance and durability. Each pack contains 16 Magnetic Couplings.