Metal Construction: This pantograph accessory is crafted from durability metal, ensuring longevity and reliable performance for your model train setupHO Scale Compatibility: 1:87 Arm Pantographs Bow is a HO scale arm pantograph for electric traction locomotives, suitable for model train enthusiasts and collectorsFunctional Design: With a closed size of 4cmx1.9cmx0.7cm and an open size of 3.2cmx1.6cmx2.8cm, this pantograph can be adjusted to suit various display needs while maintaining its integrityElectric Connectivity Ready: Equipped with a spring mechanism that allows for electrical connectivity when properly installed, adding functionality to your model train experiencePackaging: Each purchase includes the pantograph accessory, making it easy to upgrade or replace components in your existing setup Size Chart: Unopened size:4cmx1.9cmx0.7cm/1.57inchx0.75inchx0.28inch Opened size:3.2cmx1.6cmx2.8cm/1.26inchx0.63inchx1.10inch Package Includes: 2x 1:87 Arm Pantographs Bow Note: Please allow slightly errors 1-2cm differences due to manual measurement.