The Mr. Hobby -Gunze Mr. Waterproof Sand Paper #400 is a high-quality accessory for model building, specifically designed for precise sanding tasks. This set includes four sheets with a grit of 400, making it ideal for working with various materials. The waterproof nature of the sandpaper allows for effective use in both dry and wet conditions, enhancing flexibility in application. The sheets are made in Japan and provide a consistent sanding performance that ensures a clean and professional finish. This product is particularly useful for model builders who value detail accuracy and surface quality. The compact packaging with four pieces per unit ensures that there is enough material available for various projects. The Mr. Hobby -Gunze Mr. Waterproof Sand Paper is therefore an essential tool for anyone involved in model building who wants to elevate their work to a higher level.