Overview Reviews Product Description Penetrates rust to free up stuck, frozen, or seized equipment and parts. Helps prevent rust and corrosion from re-forming and leaves behind a lubricating layer. Safe to use on metal, rubber and plastic parts. Great for use on nuts, bolts, threads and locks. WD-40 Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × WD-40 WD-40® Specialist® Penetrant Lubricant Smart Straw 311g Aerosol 01278 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *