WD-40 Specialist Penetrant Spray 400ml

Worked well on seized bolts and rusty hinges. The Smart Straw makes it easy to apply accurately without wasting product. A useful addition to any toolbox.

Absolutely superb stuff this; never used it before today and it worked a treat. My usual go-to is standard WD40 then Wurth Rost Off Ice - but ran out of that and the prices have gone silly. Thought I'd try something different and glad I did... Needed to change all the front suspension arms and track rod ends on my 2002 BMW 540i this morning whilst I was able to use my pals ramps; got the car up, wheels off, soaked all the ball joints, nuts and large bushes, nuts & bolts and left them to soak whilst I made a brew etc... Came back; all bolts undid and nuts; the ball joints were easy enough to pop out without having to resort to violence, ball joint splitters/forks or heat etc - yes they took a few whacks with a peacemaker; but they came out without any issues Very impressed and would highly recommend

Really good stuff! Loosened brake carrier bolts which can be notoriously seized

I recently added the WD-40 Specialist Penetrant Spray to my toolkit, and it has already proven its value. I used it on a couple of stubborn, rusted bolts in my bike and an old garden tool, and within minutes the parts loosened up with very little effort. The spray penetrates quickly and doesn’t have the messy residue that some similar products leave behind. The nozzle gives a controlled spray, so you can target tight areas without wasting product. The smell is noticeable but not overpowering, and it doesn’t linger for long. One thing to keep in mind is that this is designed mainly as a penetrant and not as a long-term lubricant, so after freeing stuck parts it’s best to apply something else if you want ongoing protection. Overall, this is an effective, reliable product that does exactly what it promises. Definitely worth keeping on hand for household repairs, bikes, cars, or any mechanical projects.

Have always used wd40 anyway but this is my new favourite, works very well on everything, should last a long time too.

I needed this WD-40 to try and get a stuck nut undone on my motorbike. Sprayed several times to help free it. After about 1 hour it worked. The nut came off. Easy to use. Nice big can. Priced at £8.99 it's a good deal. Gets a good 4-5.

A good product beats ordinary WD40. Works fast, read label as can be harmful to eyes so wear appropriate safety kit.

This stuff works - really works. I had a very rusted bolt, impossible to budge. Used the spray, let it do its thing for a couple of hours and. hey presto, job done.