Weigle Frame Saver
Spray this inside your frame to protect from rust and corrosion. We use this on all our personal bikes and strongly recommend it.
Developed by bike builder Peter Weigle.
NOTE: Frame Saver is an aerosol, so can't be shipped by any air service, including US Postal Service (USPS) Priority Mail. It cannot be shipped outside the continental U.S., since the USPS no longer offers a surface/ship option.