The Finish Line Teflon Plus Dry Chain Lube is the original DuPont Teflon based lubricant made specifically for use on bicycles. Teflon is used to reduce the coefficient of friction and reduce mechanical wear, and is suspended in a solvent carrier. Finish Line Teflon Plus Dry Chain Lube Features Penetrates into hard-to-reach areas for maximum protection, such as the internal pins and bushings of a chain 'Dry' formula resists attracting dirt and grime For use on chains, derailleurs, and shifter and brake pivots The synthetic oils used are non-toxic and biodegradable