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TSI-301 Synthetic LubricantTSI-301 is the best available synthetic lubricant/protectant. It is an extremely effective way to prevent rust and corrosion on firearms and other delicate "toys" that are subjected to the severities of nature. It protects metal, wood and leather from the damaging effects of rain, snow or sea spray. Praised by Alaskan hunters and fishermen. No oily gummy deposits. Insist on the best. Insist on TSI-301! Costs more but is cheap insurance!