Give your stocks the walnut stain treatment with the Birchwood Casey 3oz Walnut Stain Bottle. This walnut stain from Birchwood Casey features a color intensity that is easily controlled by adding water to concentrate or using full strength for light colored woods such as birch. The Birchwood Casey Water Base Walnut Stain is a true, brown-walnut color for the traditional look that is also sun-fast, true-to-color and non-bleeding.