Using this HO brass RPO model is easy. You can simply place it on your model train track to add to your GN mail train collection. When handling the model, be gentle as it's a fragile item, especially since it's made of brass. To maintain it, avoid touching it with dirty hands as the unpainted surface can get minor tarnish. If it gets dusty, use a soft, dry cloth to gently wipe it. Store it in the original box and foam when not in use to protect it from damage. When shipping, we've packed it well, but still, handle it with care upon receiving. If you're not satisfied with your purchase, contact us within 30 days for a refund, just remember to pay for return shipping unless the item arrived damaged.