WD-40 SpecialistPenetrant with Smart Straw, Penetrant for Metal, Rubber and Plastic Threads, Locks and Nuts, Industrial Strength Fast-Acting Formula, 11 Oz.

This is the greatest stuff!!!!!! I am a 75 year old grandma that had major back surgery 6 months ago and home repairs had been piling up. This "specialist" wd-40 loosens rusty nuts and bolt like magic! Yesterday I fixed my 12 year old lawnmower and now I am changing out a bathroom faucet that was installed in 2007 My son in law couldn't even loosen some of the water hoses, today I squirted them with this Specialist WD-40 and I got them all disconnected. Only problem is that the spray button is very hard to push, it takes both hands to press it down! I am buying more cans of this (so I can spray the top of the can) Very low odor!!! The can empties pretty fast! I cannot believe it is cheaper than regular wd-40. I am ordering two more cans this time.

I am pleased with the product. Will order again. I also want to compliment the driver that delivered this product. He parked at the end of our driveway as we had asked and walked the product to the house. (we have a new driveway andcan't be driven on) I would like the driver to know I appreciate his professionalism. He definitely represents your company well.

Used it to loosen a nut on a car repair. Tried using a few different wrenches at first but to no avail. I ordered this and it came the next day. I used the straw, sprayed a couple squirts, and waited about 15 minutes…the nut spun off with very little effort! Definitely worth it.

I have a leaky bathroom faucet. It's an old faucet. I figured I'd take a shot and change the washer. Unfortunately, I found that the under-sink shut off valves were totally frozen. I checked YouTube, and one guy said to spray some WD-40 on the valves and let it soak in overnight. I thought I had some in the garage, but I must've used it up. There was no WD-40 to be found. I bought this one and sprayed it on the valves. I wasn't really expecting much, because the cold valve in particular was totally stuck. I couldn't even budge it with a wrench. The next day I gave the valve a turn with the wrench, and it was totally free. I didn't even need the wrench. I could've easily turned the valve with my hand. This WD-40 came through with flying colors. Of course it worked, it's WD-40. If I could give it six stars I would. absolutely recommended.

Most of the repairs made for vehicles and things around the house like mowers are done by myself. The need to loosen a rusted fastener or nut arises often. My practice in the past was to use a combination of applied heat and regular WD-40 or some other lubricant. A friend suggested I try this WD-40 penetrant and let it soak in to see if I noticed a difference.I bought this and tried it on a repair job on my old mower. Years of use ensured the bolts I wanted to remove was solidly rusted and immovable. On one bolt I sprayed the regular WD-40 and the other I tried this new-to-me product. Both were allowed to soak for half a day. (There may be an ideal soaking time, but I've not found any data that is universal for all applications.)When the bolts were broken loose there was an immediate difference between the two products tested. The penetrant served to loosen the bolt MUCH better and broke loose with very little effort or leverage. The other required a measured amount of force, and the wrench slipped off twice before the bolt came loose.I was convinced of the value of this product. Since then, I've used this routinely on cars, motorcycles - you name it. One star was deducted due to the fact that there were some situations where no amount of spray and no amount of soaking served to loosen bolts/screws. Multiple times in fact. I could not identify the factors that made some work and others fail to loosen. There are times when the application of the spray, no matter how thorough or how long I let it sit, just made no difference at all.Not a failure in my opinion, but the product is not full magic working on every stuck fastener. It is my primary go-to and remains a vital component in my maintenance tool set.

Pernitrates and loosens stuck parts as advertised. A good addition to my toolkit.

Indispensable item for workshop, tool room, and freeing up joints, locks, doors, etc.

It's WD 40...what else is there to say?