Compatibility: Designed specifically for 1/87 scale model trains, these hook shrapnel pieces for enhancing your HO scale train setupsUniversal Fit: These versatile coupler shrapnel parts are compatible a wide range of HO scale train models, ensuring seamless integration into your existing collectionMaterial: Made from metal, these components offer long durability and reliable performance in various model train applicationsDimensions: Each piece measures 7.85 x 5.30 x 3.50 mm/0.31x0.21x0.14inch, providing a fit for accurate and realistic model train assemblyComprehensive Set: The package includes 12 pieces of coupler shrapnel, offering ample supply for multiple projects or replacements in your model train hobby activities Size Chart: 7.85 x 5.30 x 3.50 mm/0.31x0.21x0.14inch Package Includes: 12 Model Trains HO Scale Couplers Note: Please allow slightly errors 1-2cm differences due to manual measurement.