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