Petroleum-free pro-strength formula. Long-lasting, smooth slide for your trombone without any build-up. Innovative blend of water and synthetic oil emulsion. Infused with anti-corrosion ingredients and micro bio stat preservatives. Large 2 oz. bottle. Music Nomad uses premium ingredients and formulas that don't require what we believe are unnecessary additives that can be harmful to both humans and instruments. Music Nomad strives to deliver formulas that not only outperform, but have low impact on the environment. All of our formulas qualify in a minimum of 1 of 3 areas: biodegradable, natural, water-based.