Birchwood Perma Blue Liquid Gun Kit is everything you need for a professional looking, first class job. The kit includes 3 oz Blue & Rust Remover, 3 oz Perma Blue Liquid Gun Blue, 3 oz Cleaner-Degreaser, blueing applicators, sponge, service cloth and Barricade Rust Gun Wipes. Note- Perma Blue will not blue stainless steel, aluminum or non-ferrous metals.