Rust Penetrant & Cleaner Spray with Flexible Straw | WD-40
UPC 0 79567 30048 9
UPC 0 79567 30048 9

WD-40 Specialist® Penetrant with Flexible Straw

A fast-acting penetrant with capillary action to penetrate deep into crevices, threads and seams to break the rust bonds that hold stuck parts together.

WD-40 Specialist® Penetrant Fast-Acting low odor formula works on contact to free rusted nuts, bolts, threads, locks, and chains leaving behind a protective layer that prevents rust and corrosion from re-forming. It is 50-state VOC compliant and safe to use on metal, rubber and plastic parts. Now the job is even easier with our proprietary 8” flexible straw that bends and keeps its shape, allowing unlimited access to hard-to-reach places.

  • Penetrates rust to free up stuck, frozen, or seized equipment and parts
  • Safe to use on metal, rubber and plastic parts
  • Ideal for use on nuts, bolts, threads and locks
  • 50-state VOC compliant

Related Products

WD-40 Specialist® Gel Lube Product

WD-40 Specialist® Gel Lube

4.78 (163)
Can of WD-40 Smart Straw

WD-40® Smart Straw®

3.82 (450)

Customer Reviews

Average Customer Ratings

4.87 (114 Customer Reviews)
4.87 (114)

Rating Snapshot

Select a row below to filter reviews

Sort by: newest to oldest ranking

Denny Handyman


Used it to loosen my caliper mounting bolts. Could not get them loose with my impact gun so as a last resort I sprayed them with the penetrating lube let sit very short while hit them with the impact gun an bang loose they came! Thanks. The only bad news is now I have to buy more


Works great, love the flexible straw

I used the WD-40 Specialist Penetrant Fast Acting Formula with Flexible Straw on several of my door hinges, including the ones on my shed outside. I love the flexible straw. It really came in handy with those hard to reach angles. I do feel like the Wd-40 brad did well with this product and it really fits in with their brand.


Multiple Spray Functions Allow This WD-40 to Reach

Wherever you're trying to reach, this WD-40 Specialist Penetrant will probably do the job! Aside from being about twice the size of the original WD-40, this product offers both a spray function and a stream function that can be angled into any crevice with the flexible metal straw. The straw can be bent in multiple ways to reach a rusty nut or other hard-to-reach machinery parts. And it still works like a charm to cure the typical squeaky hinges and stuck parts.


Works Great

This product is the same trusted WD-40 that we all love. It just works faster and has a flexible straw. The flexible straw is awesome. It allows me to reach every area that I want to while spraying. It works fast and efficiently.

Giovanni T

Amazing product!

I purchased tires and rims for my vehicle and had tremendous trouble taking the bolts out with the tools I had. I decided to try this product, and only used a few sprays but was pleasantly surprised at how good this product worked. I let it sit for about 2 to 3 minutes and went back to try to loosen the bolts on the tires. The screws came out with such ease and I’m so grateful this product assisted me to achieve the goal I needed. The product came quickly and packaging was very nice and neat. When I’ve tried other products of this nature, I noticed it would leak around the spouting area and it would cause the product to run down the can. With the placement of the hose, I noticed I save so much more product to use for the next time and also I haven’t noted any leakage since I used the product. I would highly recommend this product to family and friends.


Works like a charm!

Received a month ago just one can of this stuff have been using it as I work seeing that I'm a flatbed truck driver I use this on different trailers to lube up and free up straps and other accessories I use daily at work


Perfect no mess

WD-40 Specialist Penetrant Fast Acting Formula with Flexible Straw is perfect to free those old and rusty joints. It doesnt make mess as it has flexible straw. Its smell is not very powerful i mean one can be ok around it.



The adjustable tube is the best addition to this product. Finally, we can adjust the tube to pinpoint where we need the product to be sprayed. Direct the spray and let the magic begin! I have a new love of WD-40!!


Excellent Penetrating Oil

WD 40 has been a standard requirement in my shop for many years. The new flexible straw makes it even more versatile and effective. The straw can be bent and flexed to reach even the hardest to get to parts. I highly recommend this new product!


Really like the flex straw

The flexible straw has allowed me to get into places that others hasn’t. Spraying down a bolt that is rusted and in tight locations on vehicles has been very annoying in the past, with having to remove a few other parts just to make sure you are hitting where you need to. With the flex straw I am able to cut my work by a quarter as now I don’t have to remove pieces that are in the way. Also still great for around my house use as well.