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⚙️ Unlock stuck parts and unlock your productivity!
WD-40 Specialist Rust Release Penetrant Spray (11 oz) features Blu Torch technology for twice as fast rust penetration and a SMART STRAW for dual spray modes. Designed for industrial strength yet safe on multiple materials, it loosens rusted nuts, bolts, and locks while leaving a protective anti-corrosion layer. Trusted by professionals and DIYers alike, this spray is a must-have for maintaining and restoring mechanical components with ease.











| ASIN | B00631GQGW |
| Best Sellers Rank | #28,305 in Automotive ( See Top 100 in Automotive ) #41 in Care Corrosion & Rust Inhibitors |
| Brand Name | WD-40 Specialist |
| Container Type | Can |
| Customer Reviews | 4.8 4.8 out of 5 stars (16,979) |
| Flash Point | 40 Degrees Celsius |
| Global Trade Identification Number | 30079567300008 |
| Item Form | Spray |
| Item Weight | 11 Ounces |
| Liquid Volume | 11 Fluid Ounces |
| Manufacturer | WD-40 |
| Material | Plastic |
| Model Number | 300004 |
| Number of Items | 1 |
| Part Number | 300007 |
| Recommended Uses For Product | loosening tight or rusted parts, facilitating the smooth movement of mechanical components, and unlocking jammed mechanisms |
| Specific Uses For Product | Loosening Rusty Parts, Easing Removal of Nuts and Bolts, Improving Penetration in Tight Spaces |
| UPC | 079567300007 |
| Unit Count | 1 Can |
| Viscosity | Low viscosity range (e.g., 10-30 centistokes at 40°C) |
J**N
This WD-40 Specialist Penetrant is a rock-solid 5-star product that belongs in every garage, shop, and toolbox. The fast-acting formula works quickly on rusted bolts, frozen nuts, seized locks, and corroded threads that would otherwise require a breaker bar and a lot of frustration. It penetrates deep into tight threads and hard-to-reach areas, breaking up rust and corrosion without damaging the surrounding metal, rubber, or plastic—which is a big deal when working on delicate or older components. The Smart Straw applicator is excellent for switching between a broad spray and a precise, targeted stream exactly where you need it, with no straw to lose track of. Whether I'm working on the RV, vehicles, or shop equipment, this penetrant has bailed me out on more than a few stubborn fasteners that nothing else would budge. Industrial strength performance in a convenient aerosol can—it does exactly what it promises and does it well every single time. Highly recommended.
M**Z
Buen producto
R**E
RE: WD-40 Specialist Penetrant With Smart Straw, Penetrant For Metal, Rubber, And Plastic Threads Excellent product and by applying repeititively for several days, saved a dozen expensive locks for re-use saving lots of money. Also works really well on loosening up manifold bolts to remove boat manifold bolts in order to remove manifold gaskets and then install new gaskets able to save all bolts. Will use to loosen boat control cables to prevent stretching and destroying them as well saving lots of money.
R**T
Great stuff I had a pain in the A$$ lug nut to remove even used a whole can PB blaster some new stuff they had come out with. Used it over a few days treating it. I put this Stuff on it an hour later it came off. There was another one but had to soak the nut overnight but still came off. Also it works wonders on bionic legs too. Mine got stuck and couldn’t get it off. lol anyway it’s explained in the video. Don’t mind my voice I hate it.
H**5
WOW. Could not turn the metal sleeve on an old tub knob to remove it at all-would not budge. spray this in the sleeve and let it sit overnight. Sleeve unscrewed so easily!! Amazing
Trustpilot
4 days ago
2 weeks ago