Lawson Penetrating Oil is a high-performing nut and bolt loosener that provides lubrication to keep parts quiet and moving smoothly. It protects against rust and further corrosion. • Frees rusty nuts, bolts and fittings • Lubricates – keeps parts moving smoothly and quietly • Protects against rust and further corrosion • Prevents breakage of frozen parts • 20 oz. can size, 15.50 oz. net wt.