Universal Compatibility* Designed specifically for HO scale model trains, these coupler hooks are for enhancing your 1/87 electric train models Material:Made from ABS, these model train accessories ensure long term use Compact Size: Each coupler measures approximately 2cm/0.79inch in length, making them an ideal fit for detailed and realistic model train assemblies Package: This set includes 12 coupling , providing ample replacements or additions to your existing collection of model train accessories Easy Installation: These Ho Scale Train hooks are designed for straightforward attachment, allowing you to quickly upgrade or repair your HO scale trains Size Chart: Length:2cm/0.79inch Package Includes: 12 Model Trains HO Scale Coupler Hooks Note: Please allow slightly errors 1-2cm differences due to manual measurement.