Size: 1 Gallon CanConcentrated Copolymer PenetrantPenetrates Rust To Break The Surface Tension And Quickly Free The Rusted Or Immobilized PartUnique Capillary Action Allows PB To "Pull" Itself Uphill And Into The Tightest CavitiesNon-Evaporating Formula Remains To Act As A Lubricant Protecting Against Further Rust And CorrosionUse On Rusted Nuts And Bolts, Stuck Or Squeaking Joints And Corroded Pipe ThreadsHas Applications In Construction, Automotive, Industrial, Marine, Plumbing And Sporting GoodsDisplaces Water