The product is a set of three books focused on tuning and performance optimization for Volkswagen vehicles, specifically the Sport Tuning Rabbit model. Published by Haynes, these manuals provide in-depth information on how to enhance the performance of your VW vehicle. With a focus on specific make and model, these books offer valuable insights and tips for improving the overall performance and efficiency of your vehicle. Perfect for car enthusiasts looking to maximize their driving experience, these manuals are a valuable resource for anyone interested in Volkswagen performance tuning.