The product is a used Rolls-Royce Ghost RR4 Power Brake Booster with part number 34336790454. It comes with a 1-month manufacturer warranty, is made of metal, and originates from the United Kingdom. This brake booster is designed specifically for Rolls-Royce vehicles and ensures proper braking performance and safety on the road. Built with high-quality materials and precision engineering, this part is a reliable replacement for any Rolls-Royce Ghost RR4 model from 2011 to 2019.