Blaster, 4 OZ, Original PB Penetrant, Quickly Busts Loose Rusted Or Frozen Parts Caused By Rust & Corrosion, Contains A Non-Evaporating Lubricant That Saves Time & Equipment & Protects Against Further Rust & Corrosion, Breaks Free Rusted Or Frozen Parts, Protects Against Further Rust & Corrosion, Use On Automotive, Industrial, Marine, Plumbing & Other Equipment.