The Rusteprufe Chamois applicator comes with a high quality leather chamois for cleaning tools, guns, and any other metal you want to “Rusteprufe.” Why a leather chamois? No lint, it will last for years, and holds the Rusteprufe perfectly for application. The moisture retaining disk in the bottom of the jar does just that. It keeps your chamois nice and moist and ready for the next use. When your chamois starts to dry out, purchase one of our refill bottles and pour into the jar. Refills sold in 2 oz, 1 pint, or 1 quart bottles.